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164 relations: Advanced Composition Explorer, Aeronomy of Ice in the Mesosphere, Arcus (satellite), Ariane 5, ARIEL, Astrophysics, Atlas V, Blok D, C/NOFS, CHIPSat, CINDI, Cosmic Background Explorer, Cosmic Vision, Delta (rocket family), Delta 1000, Delta 2000, Delta A, Delta B, Delta C, Delta E, Delta II, Delta IV, Delta J, Delta M, Discovery Program, Dual Air Density Explorer, Dynamics Explorer, Earth trojan, European Space Agency, Explorer 1, Explorer 10, Explorer 11, Explorer 12, Explorer 14, Explorer 17, Explorer 19, Explorer 2, Explorer 26, Explorer 27, Explorer 3, Explorer 32, Explorer 33, Explorer 35, Explorer 4, Explorer 49, Explorer 5, Explorer 52, Explorer 6, Explorer 7, Explorer 8, ..., Explorer 9, Extreme Ultraviolet Explorer, Falcon 9, Far Ultraviolet Spectroscopic Explorer, Fast Auroral Snapshot Explorer, Full-sky Astrometric Mapping Explorer, GALEX, Gamma-ray astronomy, Geophysics, Geostationary orbit, Global-scale Observations of the Limb and Disk, Goddard Space Flight Center, Gravitational field, Gravity and Extreme Magnetism, Great Observatories program, Greenbelt, Maryland, H-IIA, Heat Capacity Mapping Mission, Heliocentric orbit, Heliophysics, High Energy Transient Explorer, Hitomi (satellite), IMAGE, Imaging X-ray Polarimetry Explorer, Injun (satellite), INTEGRAL, Interface Region Imaging Spectrograph, International Cometary Explorer, International Geophysical Year, International Space Station, International Ultraviolet Explorer, Interstellar Boundary Explorer, Ionosphere, Ionospheric Connection Explorer, ISEE-1, ISEE-2, JAXA, Juno I, Juno II, Jupiter-C, Lissajous orbit, List of SES satellites, Lunar orbit, M-V, Magnetosphere, Magsat, Meteoroid Technology Satellite, Micrometeoroid, Molniya orbit, NASA, National Reconnaissance Office, Neil Gehrels Swift Observatory, Neutron star, Neutron Star Interior Composition Explorer, New Frontiers program, NuSTAR, Operation Argus, Orbit, Pegasus (rocket), Project Orbiter, Project Vanguard, Proton-K, Reuven Ramaty High Energy Solar Spectroscopic Imager, Rossi X-ray Timing Explorer, S-45 (satellite), S-45A, S-56 (satellite), Satellite, Scout (rocket family), Scout X-1, SES S.A., Signals intelligence, Small Astronomy Satellite 2, Small Astronomy Satellite 3, Solar Anomalous and Magnetospheric Particle Explorer, Solar Dynamics Observatory, Solar energetic particles, Solar flare, Solar Mesosphere Explorer, Solar wind, Solrad 10, Solrad 8, Solrad 9, Soviet Union, SpaceX CRS-11, SPHEREx, Sputnik 1, Sputnik crisis, Stratospheric Aerosol and Gas Experiment, Student Nitric Oxide Explorer, Submillimeter Wave Astronomy Satellite, Sun-synchronous orbit, Suzaku (satellite), THEMIS, Thor (rocket family), Thor-Able, Thor-Agena, Thor-Delta, Toms, TRACE, Transiting Exoplanet Survey Satellite, TWINS, Uhuru (satellite), United States, United States Army, United States Department of Defense, USA-184, USA-200, Van Allen radiation belt, Vanguard TV0, Wide Field Infrared Explorer, Wide-field Infrared Survey Explorer, Wilkinson Microwave Anisotropy Probe, X-ray Astronomy Recovery Mission. Expand index (114 more) »
Advanced Composition Explorer
Advanced Composition Explorer (ACE) is a NASA Explorers program Solar and space exploration mission to study matter comprising energetic particles from the solar wind, the interplanetary medium, and other sources.
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Aeronomy of Ice in the Mesosphere
The Aeronomy of Ice in the Mesosphere (AIM) is a satellite to conduct a 26-month study of noctilucent clouds (NLCs).
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Arcus (satellite)
Arcus is a proposed X-ray space observatory proposed to NASA's Explorer program, Medium Explorer (MIDEX) class.
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Ariane 5
Ariane 5 is a European heavy-lift launch vehicle that is part of the Ariane rocket family, an expendable launch system used to deliver payloads into geostationary transfer orbit (GTO) or low Earth orbit (LEO).
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ARIEL
The Atmospheric Remote-sensing Infrared Exoplanet Large-survey (ARIEL), is a space observatory planned for launch in 2028 as the fourth medium-class mission of the European Space Agency's Cosmic Vision programme.
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Astrophysics
Astrophysics is the branch of astronomy that employs the principles of physics and chemistry "to ascertain the nature of the astronomical objects, rather than their positions or motions in space".
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Atlas V
Atlas V ("V" is pronounced "Five") is an expendable launch system in the Atlas rocket family.
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Blok D
Blok D (Блок Д meaning Block D) is an upper stage used on Soviet and later Russian expendable launch systems, including the N1, Proton-K and Zenit.
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C/NOFS
C/NOFS, or Communications/Navigation Outage Forecasting System was an American satellite developed by the Air Force Research Laboratory Space Vehicles Directorate to investigate and forecast scintillations in the Earth's ionosphere.
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CHIPSat
CHIPSat (Cosmic Hot Interstellar Plasma Spectrometer satellite) is a now-decommissioned, but still-orbiting, microsatellite.
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CINDI
CINDI, or the Coupled Ion-Neutral Dynamics Investigation is a NASA mission of opportunity payload aboard the C/NOFS satellite.
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Cosmic Background Explorer
The Cosmic Background Explorer (COBE), also referred to as Explorer 66, was a satellite dedicated to cosmology, which operated from 1989 to 1993.
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Cosmic Vision
Cosmic Vision (also known as Cosmic Vision 2015–2025) is a European Space Agency (ESA) long-term space science missions programme spanning between years 2015 and 2025, a successor to the Horizon 2000 long-term scientific programme.
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Delta (rocket family)
Delta is an American versatile family of expendable launch systems that has provided space launch capability in the United States since 1960.
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Delta 1000
The Delta 1000 series (also referred to as Straight-Eight) was an American expendable launch system which was used to conduct eight orbital launches between 1972 and 1975.
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Delta 2000
The Delta 2000 series was an American expendable launch system which was used to conduct forty-four orbital launches between 1974 and 1981.
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Delta A
The Delta A, or Thor-Delta A was an American expendable launch system used to launch two Explorer spacecraft in October 1962.
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Delta B
The Delta B, or Thor-Delta B was an American expendable launch system used for nine orbital launches between 1962 and 1964.
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Delta C
The Delta C, or Thor-Delta C was an American expendable launch system used for thirteen orbital launches between 1963 and 1969.
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Delta E
The Delta E, or Thor-Delta E was an American expendable launch system used for twenty-three orbital launches between 1965 and 1971.
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Delta II
Delta II is an expendable launch system, originally designed and built by McDonnell Douglas.
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Delta IV
Delta IV is an expendable launch system in the Delta rocket family.
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Delta J
The Delta J, or Thor-Delta J was an American expendable launch system of the late 1960s.
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Delta M
The Delta M or Thor-Delta M was an American expendable launch system used for thirteen orbital launches between 1968 and 1971.
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Discovery Program
NASA's Discovery Program is a series of lower-cost (as compared to New Frontiers or Flagship Programs), highly focused American scientific space missions that are exploring the Solar System.
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Dual Air Density Explorer
Dual Air Density Explorer was a set of 2 satellites, DADE-A and DADE-B, released as part of NASA's Explorers program.
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Dynamics Explorer
Dynamics Explorer was a NASA mission, launched on August 3, 1981 and terminated on February 28, 1991.
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Earth trojan
An Earth trojan is an asteroid that orbits the Sun in the vicinity of the Earth–Sun Lagrangian points (leading 60°) or (trailing 60°), thus having an orbit similar to Earth's.
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European Space Agency
The European Space Agency (ESA; Agence spatiale européenne, ASE; Europäische Weltraumorganisation) is an intergovernmental organisation of 22 member states dedicated to the exploration of space.
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Explorer 1
Explorer 1 was the first satellite of the United States, launched as part of its participation in the International Geophysical Year.
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Explorer 10
Explorer 10 (also known as Explorer X or P14) was an American Earth-orbital satellite that investigated Earth's magnetic fields and nearby plasma.
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Explorer 11
Explorer 11 (also known as S15) was an American Earth-orbital satellite that carried the first space-borne gamma-ray telescope.
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Explorer 12
Explorer 12 (also known as S3) was a United States Satellite built to measure Solar wind, Cosmic ray, and Magnetic field.
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Explorer 14
Explorer 14 is a spin-stabilized, solar-cell-powered spacecraft instrumented to measure cosmic-ray particles, trapped particles, solar wind protons, and magnetospheric and interplanetary magnetic fields.
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Explorer 17
Explorer 17 (also known as Atmosphere Explorer-A (AE-A) and S6) was a United States satellite, launched at Cape Canaveral from LC-17B on a Delta-B booster, on April 3, 1963, to study the Earth's upper atmosphere.
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Explorer 19
Explorer 19 was an American satellite launched on December 19, 1963, as part of NASA's Explorers program.
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Explorer 2
Explorer 2 was to be a repeat of the Explorer 1 mission.
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Explorer 26
Explorer 26 was an American satellite launched on December 21, 1964, as part of NASA's Explorers program.
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Explorer 27
Explorer 27 (or BE-C or Beacon Explorer-C or Beacon-C) was a satellite, launched in 1965, designed to conduct scientific research in the ionosphere.
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Explorer 3
Explorer 3 (international designation 1958 Gamma) was an artificial satellite of the Earth, nearly identical to the first United States artificial satellite Explorer 1 in its design and mission.
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Explorer 32
Explorer 32, also known as Atmosphere Explorer-B (AE-B), was a satellite launched by the United States to study the Earth's upper atmosphere.
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Explorer 33
Explorer 33 (also known as AIMP-D, IMP-D, AIMP 1, Anchored IMP 1, Interplanetary Monitoring Platform-D) was a spacecraft in the Explorer program launched by NASA on July 1, 1966 on a mission of scientific exploration.
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Explorer 35
Explorer 35 (IMP-E, AIMP 2, Anchored IMP 2, Interplanetary Monitoring Platform-E) was a spin-stabilized spacecraft instrumented for interplanetary studies, at lunar distances, of the interplanetary plasma, magnetic field, energetic particles, and solar X rays.
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Explorer 4
Explorer 4 was an American satellite launched on July 26, 1958.
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Explorer 49
Explorer 49 (also called Radio Astronomy Explorer-B(RAE-B)) was a 328 kilogram satellite launched on June 10, 1973 for long wave radio astronomy research.
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Explorer 5
Explorer 5 was a United States satellite with a mass of 17.24 kg.
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Explorer 52
Explorer 52 was an American satellite launched on June 3, 1974 from Vandenberg Air Force Base on a Scout booster.
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Explorer 6
Explorer 6, or S-2, was an American satellite launched on August 7, 1959.
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Explorer 7
Explorer 7 was launched October 13, 1959 at 10:36 a.m. Eastern Time by a Juno II rocket from Cape Canaveral Air Force Station to an orbit of 573 km by 1073 km and inclination of 50.27°.
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Explorer 8
Explorer 8 was an American research satellite launched on November 3, 1960.
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Explorer 9
Explorer 9, known as S-56A before launch, was an American satellite which was launched in 1961 to study the density and composition of the upper thermosphere and lower exosphere.
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Extreme Ultraviolet Explorer
The Extreme Ultraviolet Explorer (EUVE) was a space telescope for ultraviolet astronomy, launched on June 7, 1992.
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Falcon 9
Falcon 9 is a family of two-stage-to-orbit medium lift launch vehicles, named for its use of nine Merlin first-stage engines, designed and manufactured by SpaceX.
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Far Ultraviolet Spectroscopic Explorer
The Far Ultraviolet Spectroscopic Explorer (FUSE) is a space-based telescope operated by the Johns Hopkins University Applied Physics Laboratory.
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Fast Auroral Snapshot Explorer
The Fast Auroral Snapshot Explorer (FAST) is a NASA plasma physics satellite, and is the second spacecraft in the Small Explorer program.
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Full-sky Astrometric Mapping Explorer
Full-sky Astrometric Mapping Explorer (or FAME) was a proposed astrometric satellite designed to determine with unprecedented accuracy the positions, distances, and motions of 40 million stars within our galactic neighborhood (distances by stellar parallax possible).
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GALEX
The Galaxy Evolution Explorer (GALEX) is an orbiting ultraviolet space telescope launched on April 28, 2003, and operated until early 2012.
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Gamma-ray astronomy
Gamma-ray astronomy is the astronomical observation of gamma rays,Astronomical literature generally hyphenates "gamma-ray" when used as an adjective, but uses "gamma ray" without a hyphen for the noun.
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Geophysics
Geophysics is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis.
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Geostationary orbit
A geostationary orbit, often referred to as a geosynchronous equatorial orbit (GEO), is a circular geosynchronous orbit above Earth's equator and following the direction of Earth's rotation.
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Global-scale Observations of the Limb and Disk
The Global-scale Observations of the Limb and Disk (GOLD) mission is a heliophysics Mission of Opportunity for NASA’s Explorers program.
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Goddard Space Flight Center
The Goddard Space Flight Center (GSFC) is a major NASA space research laboratory located approximately northeast of Washington, D.C. in Greenbelt, Maryland, United States.
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Gravitational field
In physics, a gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body.
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Gravity and Extreme Magnetism
The Gravity and Extreme Magnetism SMEX (GEMS) mission was a cancelled space observatory mission.
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Great Observatories program
NASA's series of Great Observatories satellites are four large, powerful space-based astronomical telescopes.
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Greenbelt, Maryland
Greenbelt is a city in Prince George's County, Maryland, United States.
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H-IIA
H-IIA (H2A) is an active expendable launch system operated by Mitsubishi Heavy Industries (MHI) for the Japan Aerospace Exploration Agency.
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Heat Capacity Mapping Mission
The Heat Capacity Mapping Mission (HCMM) was the first Applications Explorer Mission.
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Heliocentric orbit
A heliocentric orbit (also called circumsolar orbit) is an orbit around the barycenter of the Solar System, which is usually located within or very near the surface of the Sun.
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Heliophysics
The term heliophysics means "physics of the Sun" (the prefix "helio", from Attic Greek hḗlios, means Sun), and appears to have been used only in that sense until quite recently.
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High Energy Transient Explorer
The High Energy Transient Explorer (abbreviated HETE; also known as Explorer 79) was an American astronomical satellite with international participation (mainly Japan and France).
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Hitomi (satellite)
, also known as ASTRO-H and New X-ray Telescope (NeXT), was an X-ray astronomy satellite commissioned by the Japan Aerospace Exploration Agency (JAXA) for studying extremely energetic processes in the Universe.
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IMAGE
IMAGE (Imager for Magnetopause-to-Aurora Global Exploration) is a NASA Medium Explorers mission that studied the global response of the Earth's magnetosphere to changes in the solar wind.
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Imaging X-ray Polarimetry Explorer
The Imaging X-ray Polarimetry Explorer (IXPE) is a future space observatory with three identical telescopes designed to measure the polarization of cosmic X-rays.
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Injun (satellite)
The Injun program was a series of six satellites designed and built by researchers at the University of Iowa.
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INTEGRAL
INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) is a currently operational space telescope for observing gamma rays.
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Interface Region Imaging Spectrograph
The Interface Region Imaging Spectrograph (IRIS), also called Explorer 94, is a NASA solar observation satellite.
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International Cometary Explorer
The International Cometary Explorer (ICE) spacecraft (designed and launched as the International Sun-Earth Explorer-3 (ISEE-3) satellite), was launched August 12, 1978, into a heliocentric orbit.
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International Geophysical Year
The International Geophysical Year (IGY; Année géophysique internationale) was an international scientific project that lasted from July 1, 1957, to December 31, 1958.
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International Space Station
The International Space Station (ISS) is a space station, or a habitable artificial satellite, in low Earth orbit.
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International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra.
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Interstellar Boundary Explorer
Interstellar Boundary Explorer (IBEX) is a NASA satellite that is making a map of the boundary between the Solar System and interstellar space.
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Ionosphere
The ionosphere is the ionized part of Earth's upper atmosphere, from about to altitude, a region that includes the thermosphere and parts of the mesosphere and exosphere.
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Ionospheric Connection Explorer
The Ionospheric Connection Explorer (ICON) is a satellite designed to investigate changes in the Earth's ionosphere.
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ISEE-1
The International Sun-Earth Explorer 1 (ISEE-1, or Explorer 56) was a 340-kg space probe used to study magnetic fields near the Earth.
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ISEE-2
The International Sun-Earth Explorer 2 (ISEE-2 a.k.a. ISEE-B) was a space probe used to study magnetic fields near the Earth.
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JAXA
The is the Japanese national aerospace and space agency.
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Juno I
The Juno I was a four-stage American booster rocket which launched America's first satellite, Explorer 1, in 1958.
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Juno II
Juno II was an American space launch vehicle used during the late 1950s and early 1960s.
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Jupiter-C
The Jupiter-C was an American research and development vehicle developed from the Jupiter-A. Jupiter-C was used for three sub-orbital spaceflights in 1956 and 1957 to test re-entry nosecones that were later to be deployed on the more advanced PGM-19 Jupiter mobile missile.
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Lissajous orbit
In orbital mechanics, a Lissajous orbit, named after Jules Antoine Lissajous, is a quasi-periodic orbital trajectory that an object can follow around a Lagrangian point of a three-body system without requiring any propulsion.
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List of SES satellites
This is a list of satellites operated by SES S.A.
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Lunar orbit
In astronomy, lunar orbit (also known as a selenocentric orbit) is the orbit of an object around the Moon.
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M-V
The M-V rocket, also called M-5 or Mu-5, was a Japanese solid-fuel rocket designed to launch scientific satellites.
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Magnetosphere
A magnetosphere is the region of space surrounding an astronomical object in which charged particles are manipulated or affected by that object's magnetic field.
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Magsat
Magsat (Magnetic Field Satellite, Explorer 61, Applications Explorer Mission-3 or AEM-3) spacecraft was launched in the fall of 1979 and ended in the spring of 1980.
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Meteoroid Technology Satellite
Meteoroid Technology Satellite (also called as MTS or Explorer 46) was a NASA satellite launched as part of Explorers program.
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Micrometeoroid
A micrometeoroid is a tiny meteoroid; a small particle of rock in space, usually weighing less than a gram.
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Molniya orbit
A Molniya orbit (a, "Lightning") is a type of satellite orbit.
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NASA
The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
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National Reconnaissance Office
The National Reconnaissance Office (NRO) is a member of the United States Intelligence Community and an agency of the United States Department of Defense.
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Neil Gehrels Swift Observatory
The Neil Gehrels Swift Observatory, previously called the Swift Gamma-Ray Burst Mission, is a NASA space telescope designed to detect gamma-ray bursts (GRBs).
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Neutron star
A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.
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Neutron Star Interior Composition Explorer
The Neutron star Interior Composition Explorer (NICER) is a NASA Explorers program Mission of Opportunity dedicated to the study of the extraordinary gravitational, electromagnetic, and nuclear physics environments embodied by neutron stars, exploring the exotic states of matter where density and pressure are higher than in atomic nuclei.
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New Frontiers program
The New Frontiers program is a series of space exploration missions being conducted by NASA with the purpose of researching several of the Solar System bodies, including the dwarf planet Pluto.
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NuSTAR
NuSTAR (Nuclear Spectroscopic Telescope Array) is a space-based X-ray telescope that uses a conical approximation to a Wolter telescope to focus high energy X-rays from astrophysical sources, especially for nuclear spectroscopy, and operates in the range of 3 to 79 keV.
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Operation Argus
Operation Argus was a series of United States low-yield, high-atmosphere nuclear weapons tests and missile tests secretly conducted during August and September 1958 over the South Atlantic Ocean.
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Orbit
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
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Pegasus (rocket)
The Pegasus is an air-launched rocket developed by Orbital Sciences Corporation (now part of Northrop Grumman Innovation System after Northrop Grumman acquired Orbital ATK).
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Project Orbiter
Project Orbiter was a proposed United States spacecraft, an early competitor to Project Vanguard.
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Project Vanguard
Project Vanguard was a program managed by the United States Naval Research Laboratory (NRL), which intended to launch the first artificial satellite into Earth orbit using a Vanguard rocket as the launch vehicle from Cape Canaveral Missile Annex, Florida.
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Proton-K
The Proton-K, also designated Proton 8K82K after its GRAU index, 8K82K, was a Russian, previously Soviet, carrier rocket derived from the earlier Proton.
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Reuven Ramaty High Energy Solar Spectroscopic Imager
Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI, originally High Energy Solar Spectroscopic Imager or HESSI) is a NASA solar flare observatory.
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Rossi X-ray Timing Explorer
The Rossi X-ray Timing Explorer (RXTE) was a satellite that observed the time variation of astronomical X-ray sources, named after physicist Bruno Rossi.
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S-45 (satellite)
S-45 was an American satellite, which was lost in a launch failure in 1961.
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S-45A
S-45A was an American satellite, which was lost in a launch failure in 1961.
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S-56 (satellite)
S-56 was an American satellite launched by NASA on 4 December 1960 as part of the Explorers program.
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Satellite
In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit.
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Scout (rocket family)
The Scout family of rockets were American launch vehicles designed to place small satellites into orbit around the Earth.
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Scout X-1
Scout X-1 was an American expendable launch system and sounding rocket which was flown seven times between August 1960 and October 1961.
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SES S.A.
SES S.A. is a communications satellite owner and operator providing video and data connectivity worldwide to broadcasters, content and internet service providers, mobile and fixed network operators, governments and institutions, with a mission to “connect, enable, and enrich”.
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Signals intelligence
Signals intelligence (SIGINT) is intelligence-gathering by interception of signals, whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligence—abbreviated to ELINT).
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Small Astronomy Satellite 2
The Small Astronomy Satellite 2, also known also as SAS-2, SAS B or Explorer 48, was a NASA gamma ray telescope.
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Small Astronomy Satellite 3
The Small Astronomy Satellite 3 (SAS 3, also known as SAS-C before launch) was a NASA X-ray astronomy space telescope.
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Solar Anomalous and Magnetospheric Particle Explorer
The Solar Anomalous and Magnetospheric Particle Explorer (SAMPEX) was a NASA solar and magnetospheric observatory, and was the first spacecraft in the Small Explorer program.
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Solar Dynamics Observatory
The Solar Dynamics Observatory (SDO) is a NASA mission which has been observing the Sun since 2010.
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Solar energetic particles
Solar energetic particles (SEP) are high-energy particles coming from the Sun.
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Solar flare
A solar flare is a sudden flash of increased Sun's brightness, usually observed near its surface.
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Solar Mesosphere Explorer
The Solar Mesosphere Explorer (also known as Explorer 64) was a United States unmanned spacecraft to investigate the processes that create and destroy ozone in Earth's upper atmosphere.
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Solar wind
The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona.
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Solrad 10
Solrad 10, also known Explorer 44, NRL-PL 165 and Explorer SE-C, was one of the SOLRAD series designed to provide continuous coverage of wavelength and intensity changes in solar radiation in the UV, soft and hard X-ray regions.
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Solrad 8
The SOLRAD 8 satellite was one of the SOLRAD (Solar Radiation) program that began in 1960 to provide continuous coverage of solar radiation with a set of standard photometers.
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Solrad 9
Solrad 9, also known Explorer 37 and Explorer SE-B, was one of the SOLRAD (Solar Radiation) program that began in 1960 to provide continuous coverage of solar radiation with a set of standard photometers.
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Soviet Union
The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.
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SpaceX CRS-11
SpaceX CRS-11, also known as SpX-11, was a Commercial Resupply Service mission to the International Space Station, launched successfully on 3 June 2017.
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SPHEREx
SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer) is a proposed near-infrared space observatory that would perform an all-sky survey to measure the near-infrared spectra of approximately 450 million galaxies.
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Sputnik 1
Sputnik 1 (or; "Satellite-1", or "PS-1", Простейший Спутник-1 or Prosteyshiy Sputnik-1, "Elementary Satellite 1") was the first artificial Earth satellite.
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Sputnik crisis
The Sputnik crisis was a period of public fear and anxiety in Western nations about the perceived technological gap between the United States and Soviet Union caused by the Soviets' launch of Sputnik 1, the world's first artificial satellite.
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Stratospheric Aerosol and Gas Experiment
The Stratospheric Aerosol and Gas Experiment (SAGE) is a series of remote sensing satellite instruments used to study the chemical composition of earth's atmosphere.
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Student Nitric Oxide Explorer
The Student Nitric Oxide Explorer (SNOE), also known as Explorer 72 and STEDI 1, was a small scientific satellite which studied the concentration of nitric oxide in the thermosphere.
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Submillimeter Wave Astronomy Satellite
The Submillimeter Wave Astronomy Satellite (SWAS) is a NASA submillimeter astronomy satellite, and is the third spacecraft in the Small Explorer program.
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Sun-synchronous orbit
A Sun-synchronous orbit (SSO, also called a heliosynchronous orbit) is a nearly polar orbit around a planet, in which the satellite passes over any given point of the planet's surface at the same local mean solar time.
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Suzaku (satellite)
Suzaku (formerly ASTRO-EII) was an X-ray astronomy satellite developed jointly by NASA's Goddard Space Flight Center and the Institute of Space and Aeronautical Science at JAXA to probe high energy X-ray sources, such as supernova explosions, black holes and galactic clusters.
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THEMIS
The Time History of Events and Macroscale Interactions during Substorms (THEMIS) mission began in February 2007 as a constellation of five NASA satellites (THEMIS A through THEMIS E) to study energy releases from Earth's magnetosphere known as substorms, magnetic phenomena that intensify auroras near Earth's poles.
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Thor (rocket family)
Thor was an American space launch vehicle derived from the PGM-17 Thor intermediate-range ballistic missile.
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Thor-Able
The Thor-Able was an American expendable launch system and sounding rocket used for a series of re-entry vehicle tests and satellite launches between 1958 and 1960.
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Thor-Agena
Thor-Agena was a series of orbital launch vehicles.
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Thor-Delta
The Thor-Delta, also known as Delta DM-19 or just Delta was an early American expendable launch system used for 12 orbital launches in the early 1960s.
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Toms
Toms, Tom's or TOMS may refer to.
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TRACE
Transition Region and Coronal Explorer (TRACE) was a NASA heliophysics and solar observatory designed to investigate the connections between fine-scale magnetic fields and the associated plasma structures on the Sun by providing high resolution images and observation of the solar photosphere, the transition region, and the corona.
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Transiting Exoplanet Survey Satellite
The Transiting Exoplanet Survey Satellite (TESS) is a space telescope for NASA's Explorers program, designed to search for exoplanets using the transit method in an area 400 times larger than that covered by the Kepler mission.
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TWINS
Two Wide-Angle Imaging Neutral-Atom Spectrometers (TWINS) are a pair of NASA instruments aboard two United States National Reconnaissance Office satellites in Molniya orbits.
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Uhuru (satellite)
Uhuru was the first satellite launched specifically for the purpose of X-ray astronomy.
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United States
The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
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United States Army
The United States Army (USA) is the land warfare service branch of the United States Armed Forces.
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United States Department of Defense
The Department of Defense (DoD, USDOD, or DOD) is an executive branch department of the federal government of the United States charged with coordinating and supervising all agencies and functions of the government concerned directly with national security and the United States Armed Forces.
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USA-184
USA-184, also known as NRO Launch 22 or NROL-22, is an American signals intelligence satellite, operated by the National Reconnaissance Office.
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USA-200
USA-200, also known as NRO Launch 28 or NROL-28, is an American signals intelligence satellite, operated by the National Reconnaissance Office.
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Van Allen radiation belt
A Van Allen radiation belt is a zone of energetic charged particles, most of which originate from the solar wind, that are captured by and held around a planet by that planet's magnetic field.
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Vanguard TV0
Vanguard TV-0, also called Vanguard Test Vehicle Zero, was the first sub-orbital test flight of a Vanguard rocket as part of the Project Vanguard.
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Wide Field Infrared Explorer
The Wide Field Infrared Explorer (WIRE) was a satellite launched on March 5, 1999, on the Pegasus XL rocket into polar orbit between above the Earth's surface.
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Wide-field Infrared Survey Explorer
Wide-field Infrared Survey Explorer (WISE) is a NASA infrared-wavelength astronomical space telescope launched in December 2009, and placed in hibernation in February 2011.
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Wilkinson Microwave Anisotropy Probe
The Wilkinson Microwave Anisotropy Probe (WMAP), originally known as the Microwave Anisotropy Probe (MAP), was a spacecraft operating from 2001 to 2010 which measured temperature differences across the sky in the cosmic microwave background (CMB) – the radiant heat remaining from the Big Bang.
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X-ray Astronomy Recovery Mission
The X-ray Astronomy Recovery Mission (XARM, pronounced "charm")According to Paul Hertz, director of NASA's astrophysics division, this is because the project "does need some luck" is an X-ray astronomy satellite project of the Japan Aerospace Exploration Agency (JAXA) to provide breakthroughs in the study of structure formation of the universe, outflows from galaxy nuclei, and dark matter.
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Redirects here:
Explorer missions, Explorer program, Explorer project, Explorers program, IMP-A, IMP-A satellite, Medium Explorer program, Medium Explorers program, Project Explorer, TERRIERS.
References
[1] https://en.wikipedia.org/wiki/Explorers_Program
