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Hollis Langosh ∙
The size. The gaseous Jovian planets are far larger than the inner terrestrial planets.
It's Alto which usually means high but when describing clouds it means the middle.
Astronomers conclude that the universe is expanding, because wavelengths are increasing.
Hydrogen! :)
No. They do not have enough mass to become black holes. Depending on the mass they will either become white dwarfs or neutron stars.
6000 k
doppler effect
A galaxy.
I think you are referring to a phenomenon called Nutation.
greenhouse effect