The geocorona is the luminous part of the outermost region of the Earth's atmosphere, the exosphere. It is seen primarily via far-ultraviolet light (Lyman-alpha) from the Sun that is scattered from neutral hydrogen. [1] .

Feb 20, 2019 · Where our atmosphere merges into outer space, there is a cloud of hydrogen atoms called the geocorona. One of the spacecraft instruments, SWAN, used its sensitive sensors to trace the hydrogen signature and precisely detect how far …

Feb 21, 2019 · Earth's "geocorona" — a tenuous cloud of hydrogen atoms — extends up to 390,000 miles (630,000 kilometers) into space, according to the new research. For perspective: The moon orbits Earth at an...

Jan 24, 2025 · The Carruthers observatory will capture light from Earth’s geocorona, the part of the outer atmosphere that emits ultraviolet light.

Feb 20, 2019 · Where Earth’s atmosphere merges into outer space, there is a cloud of hydrogen atoms called the geocorona. A recent discovery based on observations by the ESA/NASA Solar and Heliospheric Observatory, SOHO, shows that the geocorona extends well beyond the orbit of the Moon, reaching up to 630 000 km above Earth’s surface, or 50 times the ...

A February 2019 study using data from the NASA/European Space Agency Solar and Heliospheric Observatory (SOHO) spacecraft suggests, however, that the farthest reaches of Earth’s atmosphere — a cloud of hydrogen atoms called the geocorona — may actually extend nearly 391,000 miles (629,300 kilometers) into space, far beyond the orbit of ...

Mar 29, 2024 · This is inspired by the mission’s namesake, George R. Carruthers, an African American physicist who designed and built the Moon-based telescope that first observed the geocorona. The Carruthers Geocorona Observatory mission will study Earth’s exosphere, the outermost layer of Earth’s atmosphere.

Sep 1, 2019 · Where Earth's atmosphere merges into outer space, there is a cloud of hydrogen atoms called the geocorona. A recent discovery based on observations by the ESA/NASA Solar and Heliospheric Observatory, SOHO, shows that the geocorona extends well beyond the orbit of the Moon, reaching up to 630 000 km above Earth's surface, or 50 times the ...

Feb 21, 2019 · The data have shown that the outermost part of Earth’s atmosphere – called its geocorona – extends beyond the moon’s orbit. This gaseous geocorona – a cloud of hydrogen atoms, made faintly...

Feb 21, 2019 · By turning SWAN on the Earth at the right times of the year, SOHO was able to detect hydrogen atoms from the atmosphere and measure how far out they extend into what space scientists call the...