84 relations: Accuracy and precision, Alpha Cephei, Alpha particle, Atlas-Agena, Atmosphere, Atmospheric pressure, Attitude control, Bar (unit), Bruce C. Murray, California Institute of Technology, Canopus, Cape Canaveral Air Force Station, Cape Canaveral Air Force Station Launch Complex 12, Cassegrain reflector, Celestial mechanics, Celsius, Cosmic dust, Cosmic ray, Data acquisition, Directional antenna, Earth, Electric power, Exploration of Mars, Gamma Velorum, Geiger counter, Geiger–Müller tube, Gyroscope, Heliocentric orbit, Helium, Hydrazine, Ionization chamber, Jet Propulsion Laboratory, Kilobyte, Life on Mars, List of missions to Mars, Magnesium, Magnetic field, Magnetometer, Mariner (crater), Mariner 3, Mariner 5, Mariner program, Mars, Micrometeoroid, Momentum, Monopropellant, Moon, NASA, Nitrogen, Orbit, ..., Outer space, Parabolic antenna, Particle detector, Pascal (unit), Pastel, Planetary flyby, Plasma (physics), Professional video camera, Prometheus Books, Proton, Radio, Radio occultation, Regulus, Resistor, RM-81 Agena, S band, Science fiction, Silver-oxide battery, SM-65D Atlas, Solar cell, Solar panel, Solar sail, Space exploration, Space probe, Spacecraft, Spacecraft propulsion, Sun, Tape recorder, The Washington Post, Traveling-wave tube, Triode, Van Allen radiation belt, Venus, Zeta Puppis. Expand index (34 more) » « Shrink index
Precision is a description of random errors, a measure of statistical variability.
Alpha Cephei (α Cephei, abbreviated Alpha Cep, α Cep), also named Alderamin, is a second magnitude star in the constellation of Cepheus near the northern pole.
Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus.
The Atlas-Agena was an American expendable launch system derived from the SM-65 Atlas missile.
An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body.
Atmospheric pressure, sometimes also called barometric pressure, is the pressure within the atmosphere of Earth (or that of another planet).
Attitude control is controlling the orientation of an object with respect to an inertial frame of reference or another entity like the celestial sphere, certain fields, and nearby objects, etc.
The bar is a metric unit of pressure, but is not approved as part of the International System of Units (SI).
Bruce Churchill Murray (November 30, 1931 – August 29, 2013) was an American planetary scientist.
The California Institute of Technology (abbreviated Caltech)The university itself only spells its short form as "Caltech"; other spellings such as.
Canopus, also designated Alpha Carinae (α Carinae, abbreviated Alpha Car, α Car), is the brightest star in the southern constellation of Carina, and the second-brightest star in the night-time sky, after Sirius.
Cape Canaveral Air Force Station (CCAFS) (known as Cape Kennedy Air Force Station from 1963 to 1973) is an installation of the United States Air Force Space Command's 45th Space Wing.
Launch Complex 12 (LC-12) at Cape Canaveral Air Force Station, Florida was a launch pad used by Atlas rockets and missiles between 1958 and 1967.
The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas.
Celestial mechanics is the branch of astronomy that deals with the motions of celestial objects.
The Celsius scale, previously known as the centigrade scale, is a temperature scale used by the International System of Units (SI).
Cosmic dust, also called extraterrestrial dust or space dust, is dust which exists in outer space, as well as all over planet Earth.
Cosmic rays are high-energy radiation, mainly originating outside the Solar System and even from distant galaxies.
Data acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer.
A directional antenna or beam antenna is an antenna which radiates or receives greater power in specific directions allowing increased performance and reduced interference from unwanted sources.
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit.
The planet Mars has been explored remotely by spacecraft.
Gamma Velorum (γ Vel, γ Velorum) is a multiple star system in the constellation Vela.
The Geiger counter is an instrument used for detecting and measuring ionizing radiation used widely in applications such as radiation dosimetry, radiological protection, experimental physics and the nuclear industry.
The Geiger–Müller tube or G–M tube is the sensing element of the Geiger counter instrument used for the detection of ionizing radiation.
A gyroscope (from Ancient Greek γῦρος gûros, "circle" and σκοπέω skopéō, "to look") is a device used for measuring or maintaining orientation and angular velocity.
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.
Helium (from lit) is a chemical element with symbol He and atomic number 2.
Hydrazine is an inorganic compound with the chemical formula (also written), called diamidogen, archaically.
The ionization chamber is the simplest of all gas-filled radiation detectors, and is widely used for the detection and measurement of certain types of ionizing radiation; X-rays, gamma rays, and beta particles.
The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in Pasadena, California, United States, with large portions of the campus in La Cañada Flintridge, California.
The kilobyte is a multiple of the unit byte for digital information.
The possibility of life on Mars is a subject of significant interest to astrobiology due to its proximity and similarities to Earth.
There are a number of derelict orbiters around Mars whose location is not known precisely; there is a proposal to search for small moons, dust rings, and old orbiters with the Optical Navigation Camera on the Mars Reconnaissance Orbiter.
Magnesium is a chemical element with symbol Mg and atomic number 12.
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
A magnetometer is an instrument that measures magnetism—either the magnetization of a magnetic material like a ferromagnet, or the direction, strength, or relative change of a magnetic field at a particular location.
Mariner Crater is a crater on Mars with a diameter of 170 km.
Mariner 3 (together with Mariner 4 known as Mariner-Mars 1964) was one of two identical deep-space probes designed and built by the Jet Propulsion Laboratory (JPL) for NASA's Mariner-Mars 1964 project that were intended to conduct close-up (flyby) scientific observations of the planet Mars and transmit information on interplanetary space and the space surrounding Mars, televised images of the Martian surface and radio occultation data of spacecraft signals as affected by the Martian atmosphere back to Earth.
Mariner 5 (Mariner Venus 1967) was a spacecraft of the Mariner program that carried a complement of experiments to probe Venus' atmosphere by radio occultation, measure the hydrogen Lyman-alpha (hard ultraviolet) spectrum, and sample the solar particles and magnetic field fluctuations above the planet.
The Mariner program was a 10-mission program conducted by the American space agency NASA in conjunction with Jet Propulsion Laboratory (JPL).
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
A micrometeoroid is a tiny meteoroid; a small particle of rock in space, usually weighing less than a gram.
In Newtonian mechanics, linear momentum, translational momentum, or simply momentum (pl. momenta) is the product of the mass and velocity of an object.
Monopropellants are propellants consisting of chemicals that release energy through exothermic chemical decomposition.
The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.
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.
Nitrogen is a chemical element with symbol N and atomic number 7.
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.
Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies.
A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves.
In experimental and applied particle physics, nuclear physics, and nuclear engineering, a particle detector, also known as a radiation detector, is a device used to detect, track, and/or identify ionizing particles, such as those produced by nuclear decay, cosmic radiation, or reactions in a particle accelerator.
The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength.
A pastel is an art medium in the form of a stick, consisting of pure powdered pigment and a binder.
A planetary flyby is the act of sending a space probe past a planet or a dwarf planet close enough to record scientific data.
Plasma (Henry George Liddell, Robert Scott, A Greek English Lexicon, on Perseus) is one of the four fundamental states of matter, and was first described by chemist Irving Langmuir in the 1920s.
A professional video camera (often called a television camera even though the use has spread beyond television) is a high-end device for creating electronic moving images (as opposed to a movie camera, that earlier recorded the images on film).
Prometheus Books is a publishing company founded in August 1969 by the philosopher Paul Kurtz (who was also the founder of the Council for Secular Humanism, Center for Inquiry, and co-founder of the Committee for Skeptical Inquiry).
Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.
Radio occultation (RO) is a remote sensing technique used for measuring the physical properties of a planetary atmosphere or ring system.
Regulus, also designated Alpha Leonis (α Leonis, abbreviated Alpha Leo, α Leo), is the brightest star in the constellation of Leo and one of the brightest stars in the night sky, lying approximately 79 light years from the Sun.
A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.
The RM-81 Agena was an American rocket upper stage and satellite bus which was developed by Lockheed initially for the canceled WS-117L reconnaissance satellite program.
The S band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a part of the microwave band of the electromagnetic spectrum covering frequencies from 2 to 4 gigahertz (GHz).
Science fiction (often shortened to Sci-Fi or SF) is a genre of speculative fiction, typically dealing with imaginative concepts such as advanced science and technology, spaceflight, time travel, and extraterrestrial life.
A silver-oxide battery (IEC code: S) is a primary cell with a very high energy-to-weight ratio.
The SM-65D Atlas, or Atlas D, was the first operational version of the U.S. Atlas missile.
A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.
Photovoltaic solar panels absorb sunlight as a source of energy to generate electricity.
Solar sails (also called light sails or photon sails) are a proposed method of spacecraft propulsion using radiation pressure exerted by sunlight on large mirrors.
Space exploration is the discovery and exploration of celestial structures in outer space by means of evolving and growing space technology.
A space probe is a robotic spacecraft that does not orbit the Earth, but, instead, explores further into outer space.
A spacecraft is a vehicle or machine designed to fly in outer space.
Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites.
The Sun is the star at the center of the Solar System.
An audio tape recorder, tape deck, or tape machine is an audio storage device that records and plays back sounds, including articulated voices, usually using magnetic tape, either wound on a reel or in a cassette, for storage.
The Washington Post is a major American daily newspaper founded on December 6, 1877.
A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in the microwave range.
A triode is an electronic amplifying vacuum tube (or valve in British English) consisting of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode).
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.
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.
Zeta Puppis (ζ Puppis, abbreviated Zeta Pup, ζ Pup), also named Naos, is a star in the constellation of Puppis.