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In a cometary coma, various hydrogen compounds, especially water, that are photodissociated by solar UV radiation form a gigantic hydrogen cloud with a radius of several million kilometers around the cometary nucleus. These cometary hydrogen clouds have been observed by a number of spacecraft outside the terrestrial atmosphere and in interplanetary space. For instance, the hydrogen cloud of Comet Halley was a good target for the ultraviolet photometers and spectrometers on board the IUE, Suisei, Pioneer Venus, DE-1, and sounding rockets. Hydrogen cloud activity could be used as a good measure of cometary activity, but some problems remain to be explored in the future.
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Which terrestrial planet is permanently covered in clouds?
Venus is covered in acid clouds.
What are huge clouds of helium and hydrogen called?
Vast interstellar clouds of hydrogen are known as "nebula."
Are comets and asteroids surrounded by hydrogen cloud?
yes sometimes
Is asteroids surrounded by hydrogen clouds?
No
What do asteroids and comets bring to the earth?
They bring down rare minerals and potentially hydrogen and water
Which terrestrial planet is permanently covered in clouds?
Venus is covered in acid clouds.
What are huge clouds of helium and hydrogen called?
Vast interstellar clouds of hydrogen are known as "nebula."
True or false comets are believed to orginate in the oort clouds?
true
Which planet is covered with clouds?
The planet Venus is completely covered with clouds. The clouds are comprised of sulfuric acid, which traps in the atmosphere and heat.
Who First Created Water?
nobody, water forms naturally anyplace both hydrogen and oxygen are present. comets are mostly water ice. there are clouds of partially ionized water near stars that glow.
Are comets and asteroids surrounded by hydrogen cloud?
yes sometimes
Is asteroids surrounded by hydrogen clouds?
No
What is the surface of jupiter covered with?
clouds
Are asteroids surrounded by a hydrogen cloud?
i din't think so but sometimes comets are
What over is covered with clouds?
air and water
Which planet has a dense cloud cover?
Venus is completely covered by sulfuric acid clouds. The gas planets (Jupiter, Saturn, Uranus, and Neptune) are essentially made up of just clouds and gas. There's nothing much being covered, except fluids like liquid hydrogen. Very deep down there may be rocky cores.
Are there gas clouds in the Milky Way?
Yes, there are huge clouds of hydrogen gas, called nebulae.
