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Geocorona

 

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Geocorona



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

The Earth's atmosphere is a layer of gases surrounding the planet Earth that is retained by the Earth's gravity. Dry air contains roughly 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% Carbon dioxide in the Earth's atmosphere, and trace amounts of other gases....
, the exosphere
Exosphere

The exosphere is the uppermost layer of an atmosphere. In the exosphere, an upward travelling molecule can escape to space or be pulled back to the celestial body by gravity with little probability of colliding with another molecule....
. It is seen primarily via far-ultraviolet
Ultraviolet

Ultraviolet light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than x-rays, in the range 400 nanometer to 10 nm, and energies from 3 Electron volt to 124 eV....
 light
Light

Light, or visible light, is electromagnetic radiation of a wavelength that is Visible spectrum to the human eye , or up to 380?750 nm. In the broader field of physics, light is sometimes used to refer to electromagnetic radiation of all wavelengths, whether visible or not....
 (Lyman-alpha
Lyman series

In physics, the Lyman series is the series of transitions and resulting emission lines of the hydrogen atom as an electron goes from n = 2 to n = 1 ....
) from the Sun
Sun

The Sun , a G V star, is the star at the center of the Solar System. The Earth and other matter orbit the Sun, which by itself accounts for about 98.6% of the Solar System's mass....
 that is scattered
Scattering

Scattering is a general physical process where some forms of radiation, such as light, sound, or moving particles,are forced to deviate from a straight trajectory by one or more localized non-uniformities in the medium through which they pass....
 from neutral hydrogen. It extends to at least 15.5 Earth radii. The geocorona has been studied from outer space
Outer space

Outer space comprises the relatively empty regions of the universe outside the atmospheres of celestial bodies. Outer space is used to distinguish it from airspace and terrestrial locations....
 by the Astrid satellites
Astrid (satellites)

Astrid-1 and Astrid-2 were two Miniaturized satellites designed and developed by Swedish Space Corporation on behalf of the Swedish National Space Board....
 and the Galileo spacecraft
Galileo spacecraft

Galileo was an unmanned spacecraft sent by NASA to study the planet Jupiter and its natural satellites. Named after the astronomer and Renaissance pioneer Galileo Galilei, it was launched on October 18, 1989 by the Space Shuttle Atlantis on the STS-34 mission....
 (among others), using its ultraviolet spectrometer
Spectrometer

A spectrograph is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials....
 (UVS) during an Earth
Earth

Earth is the third planet from the Sun. Earth is the largest of the terrestrial planets in the Solar System in diameter, mass and density. It is also referred to as the World and Wiktionary:Terra.Note that by International Astronomical Union convention, the term "Terra" is used for naming extensive land masses, rather...
 flyby
Flyby

Flyby may refer to:* Flypast or flyover, a celebratory display or ceremonial flight* Planetary flyby, a type of interplanetary spacecraft mission...
.








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Encyclopedia


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

The Earth's atmosphere is a layer of gases surrounding the planet Earth that is retained by the Earth's gravity. Dry air contains roughly 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% Carbon dioxide in the Earth's atmosphere, and trace amounts of other gases....
, the exosphere
Exosphere

The exosphere is the uppermost layer of an atmosphere. In the exosphere, an upward travelling molecule can escape to space or be pulled back to the celestial body by gravity with little probability of colliding with another molecule....
. It is seen primarily via far-ultraviolet
Ultraviolet

Ultraviolet light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than x-rays, in the range 400 nanometer to 10 nm, and energies from 3 Electron volt to 124 eV....
 light
Light

Light, or visible light, is electromagnetic radiation of a wavelength that is Visible spectrum to the human eye , or up to 380?750 nm. In the broader field of physics, light is sometimes used to refer to electromagnetic radiation of all wavelengths, whether visible or not....
 (Lyman-alpha
Lyman series

In physics, the Lyman series is the series of transitions and resulting emission lines of the hydrogen atom as an electron goes from n = 2 to n = 1 ....
) from the Sun
Sun

The Sun , a G V star, is the star at the center of the Solar System. The Earth and other matter orbit the Sun, which by itself accounts for about 98.6% of the Solar System's mass....
 that is scattered
Scattering

Scattering is a general physical process where some forms of radiation, such as light, sound, or moving particles,are forced to deviate from a straight trajectory by one or more localized non-uniformities in the medium through which they pass....
 from neutral hydrogen. It extends to at least 15.5 Earth radii. The geocorona has been studied from outer space
Outer space

Outer space comprises the relatively empty regions of the universe outside the atmospheres of celestial bodies. Outer space is used to distinguish it from airspace and terrestrial locations....
 by the Astrid satellites
Astrid (satellites)

Astrid-1 and Astrid-2 were two Miniaturized satellites designed and developed by Swedish Space Corporation on behalf of the Swedish National Space Board....
 and the Galileo spacecraft
Galileo spacecraft

Galileo was an unmanned spacecraft sent by NASA to study the planet Jupiter and its natural satellites. Named after the astronomer and Renaissance pioneer Galileo Galilei, it was launched on October 18, 1989 by the Space Shuttle Atlantis on the STS-34 mission....
 (among others), using its ultraviolet spectrometer
Spectrometer

A spectrograph is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials....
 (UVS) during an Earth
Earth

Earth is the third planet from the Sun. Earth is the largest of the terrestrial planets in the Solar System in diameter, mass and density. It is also referred to as the World and Wiktionary:Terra.Note that by International Astronomical Union convention, the term "Terra" is used for naming extensive land masses, rather...
 flyby
Flyby

Flyby may refer to:* Flypast or flyover, a celebratory display or ceremonial flight* Planetary flyby, a type of interplanetary spacecraft mission...
.

See also


  • Corona
    Corona

    A corona is a type of Plasma "celestial body's atmosphere" of the Sun or other celestial body, extending millions of kilometres into space, most easily seen during a total solar eclipse, but also observable in a coronagraph....
  • Geomagnetic storm
    Geomagnetic storm

    A geomagnetic storm is a temporary disturbance of the Earth's magnetosphere caused by a disturbance in space weather. Associated with solar coronal mass ejections , coronal holes, or solar flares, a geomagnetic storm is caused by a solar wind shock wave which typically strikes the Earth's magnetic field 24 to 36 hours after the event....


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