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Exosphere

Index Exosphere

The exosphere (ἔξω éxō "outside, external, beyond", σφαῖρα sphaĩra "sphere") is a thin, atmosphere-like volume surrounding a planet or natural satellite where molecules are gravitationally bound to that body, but where the density is so low that the molecules are essentially collision-less. [1]

Table of Contents

  1. 46 relations: Aeronomy, Allotropes of oxygen, Atmosphere of Earth, Atmosphere of the Moon, Atom, Barometric formula, Boltzmann constant, Calcium, Carbon dioxide, Ceres (dwarf planet), Degassing, Earth, Europa (moon), Extraterrestrial atmosphere, Extraterrestrial sky, Ganymede (moon), Geocorona, Gravity, Helium, Hydrogen, Ideal gas, Interplanetary medium, Iron, Knudsen number, List of natural satellites, Magnetosphere, Mean free path, Mercury (planet), Molecule, Moon, NASA, Natural satellite, Orbit, Outer space, Parabolic trajectory, Photodissociation, Planet, Potassium, Radiation pressure, Research, Scale height, Sodium, Solar wind, Springer Publishing, Sputtering, Thermosphere.

Aeronomy

Aeronomy is the scientific study of the upper atmosphere of the Earth and corresponding regions of the atmospheres of other planets.

See Exosphere and Aeronomy

Allotropes of oxygen

There are several known allotropes of oxygen.

See Exosphere and Allotropes of oxygen

Atmosphere of Earth

The atmosphere of Earth is composed of a layer of gas mixture that surrounds the Earth's planetary surface (both lands and oceans), known collectively as air, with variable quantities of suspended aerosols and particulates (which create weather features such as clouds and hazes), all retained by Earth's gravity. Exosphere and atmosphere of Earth are atmosphere.

See Exosphere and Atmosphere of Earth

Atmosphere of the Moon

The atmosphere of the Moon is a very sparse layer of gases surrounding the Moon.

See Exosphere and Atmosphere of the Moon

Atom

Atoms are the basic particles of the chemical elements.

See Exosphere and Atom

Barometric formula

The barometric formula is a formula used to model how the pressure (or density) of the air changes with altitude.

See Exosphere and Barometric formula

Boltzmann constant

The Boltzmann constant is the proportionality factor that relates the average relative thermal energy of particles in a gas with the thermodynamic temperature of the gas.

See Exosphere and Boltzmann constant

Calcium

Calcium is a chemical element; it has symbol Ca and atomic number 20.

See Exosphere and Calcium

Carbon dioxide

Carbon dioxide is a chemical compound with the chemical formula.

See Exosphere and Carbon dioxide

Ceres (dwarf planet)

Ceres (minor-planet designation: 1 Ceres) is a dwarf planet in the middle main asteroid belt between the orbits of Mars and Jupiter.

See Exosphere and Ceres (dwarf planet)

Degassing

Degassing, also known as degasification, is the removal of dissolved gases from liquids, especially water or aqueous solutions.

See Exosphere and Degassing

Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

See Exosphere and Earth

Europa (moon)

Europa, or Jupiter II, is the smallest of the four Galilean moons orbiting Jupiter, and the sixth-closest to the planet of all the 95 known moons of Jupiter.

See Exosphere and Europa (moon)

Extraterrestrial atmosphere

The study of extraterrestrial atmospheres is an active field of research, both as an aspect of astronomy and to gain insight into Earth's atmosphere.

See Exosphere and Extraterrestrial atmosphere

Extraterrestrial sky

In astronomy, an extraterrestrial sky is a view of outer space from the surface of an astronomical body other than Earth.

See Exosphere and Extraterrestrial sky

Ganymede (moon)

Ganymede, or Jupiter III, is the largest and most massive natural satellite of Jupiter and in the Solar System.

See Exosphere and Ganymede (moon)

Geocorona

The geocorona is the luminous part of the outermost region of the Earth's atmosphere, the exosphere.

See Exosphere and Geocorona

Gravity

In physics, gravity is a fundamental interaction which causes mutual attraction between all things that have mass.

See Exosphere and Gravity

Helium

Helium (from lit) is a chemical element; it has symbol He and atomic number 2.

See Exosphere and Helium

Hydrogen

Hydrogen is a chemical element; it has symbol H and atomic number 1.

See Exosphere and Hydrogen

Ideal gas

An ideal gas is a theoretical gas composed of many randomly moving point particles that are not subject to interparticle interactions.

See Exosphere and Ideal gas

Interplanetary medium

The interplanetary medium (IPM) or interplanetary space consists of the mass and energy which fills the Solar System, and through which all the larger Solar System bodies, such as planets, dwarf planets, asteroids, and comets, move.

See Exosphere and Interplanetary medium

Iron

Iron is a chemical element.

See Exosphere and Iron

Knudsen number

The Knudsen number (Kn) is a dimensionless number defined as the ratio of the molecular mean free path length to a representative physical length scale.

See Exosphere and Knudsen number

List of natural satellites

Of the Solar System's eight planets and its nine most likely dwarf planets, six planets and seven dwarf planets are known to be orbited by at least 300 natural satellites, or moons.

See Exosphere and List of natural satellites

Magnetosphere

In astronomy and planetary science, a magnetosphere is a region of space surrounding an astronomical object in which charged particles are affected by that object's magnetic field.

See Exosphere and Magnetosphere

Mean free path

In physics, mean free path is the average distance over which a moving particle (such as an atom, a molecule, or a photon) travels before substantially changing its direction or energy (or, in a specific context, other properties), typically as a result of one or more successive collisions with other particles.

See Exosphere and Mean free path

Mercury (planet)

Mercury is the first planet from the Sun and the smallest in the Solar System.

See Exosphere and Mercury (planet)

Molecule

A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion.

See Exosphere and Molecule

Moon

The Moon is Earth's only natural satellite.

See Exosphere and Moon

NASA

The National Aeronautics and Space Administration (NASA) is an independent agency of the U.S. federal government responsible for the civil space program, aeronautics research, and space research.

See Exosphere and NASA

Natural satellite

A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite).

See Exosphere and Natural satellite

Orbit

In celestial mechanics, an orbit (also known as orbital revolution) is the curved trajectory of an object such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an artificial satellite around an object or position in space such as a planet, moon, asteroid, or Lagrange point.

See Exosphere and Orbit

Outer space

Outer space (or simply space) is the expanse that exists beyond Earth's atmosphere and between celestial bodies.

See Exosphere and Outer space

Parabolic trajectory

In astrodynamics or celestial mechanics a parabolic trajectory is a Kepler orbit with the eccentricity equal to 1 and is an unbound orbit that is exactly on the border between elliptical and hyperbolic.

See Exosphere and Parabolic trajectory

Photodissociation

Photodissociation, photolysis, photodecomposition, or photofragmentation is a chemical reaction in which molecules of a chemical compound are broken down by absorption of light or photons.

See Exosphere and Photodissociation

Planet

A planet is a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself.

See Exosphere and Planet

Potassium

Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number19.

See Exosphere and Potassium

Radiation pressure

Radiation pressure (also known as light pressure) is mechanical pressure exerted upon a surface due to the exchange of momentum between the object and the electromagnetic field.

See Exosphere and Radiation pressure

Research

Research is "creative and systematic work undertaken to increase the stock of knowledge".

See Exosphere and Research

Scale height

In atmospheric, earth, and planetary sciences, a scale height, usually denoted by the capital letter H, is a distance (vertical or radial) over which a physical quantity decreases by a factor of e (the base of natural logarithms, approximately 2.718).

See Exosphere and Scale height

Sodium

Sodium is a chemical element; it has symbol Na (from Neo-Latin natrium) and atomic number 11.

See Exosphere and Sodium

Solar wind

The solar wind is a stream of charged particles released from the Sun's outermost atmospheric layer, the corona.

See Exosphere and Solar wind

Springer Publishing

Springer Publishing Company is an American publishing company of academic journals and books, focusing on the fields of nursing, gerontology, psychology, social work, counseling, public health, and rehabilitation (neuropsychology).

See Exosphere and Springer Publishing

Sputtering

In physics, sputtering is a phenomenon in which microscopic particles of a solid material are ejected from its surface, after the material is itself bombarded by energetic particles of a plasma or gas.

See Exosphere and Sputtering

Thermosphere

The thermosphere is the layer in the Earth's atmosphere directly above the mesosphere and below the exosphere. Exosphere and thermosphere are atmosphere.

See Exosphere and Thermosphere

References

[1] https://en.wikipedia.org/wiki/Exosphere

Also known as Critical Level, Exoatmosphere, Exoatmospheric.