Earth is the only planet known to have a significant amount of oxygen molecules in its atmosphere.
Mercury, Venus, Mars, and the gas giants Jupiter, Saturn, Uranus, and Neptune do not have oxygen in their atmospheres. These planets have atmospheres composed of different elements and compounds, but oxygen is not a significant component.
It would be difficult for humans to breathe on other planets as the atmospheres are very different from Earth's. For example, on Mars the atmosphere is mostly carbon dioxide with very little oxygen. Special equipment would be needed to survive on other planets.
yes, some other planets like Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune have atmospheres
Earth is the only known planet with an oxygenated atmosphere.
No, there is no oxygen on any other planet other than Earth because there is no planet life on the other planets.
Yes. There is one planet with oxygen in its atmosphere: our home planet Earth.
"Gravity" is responsible for the existence of planetary orbits, and for their shapes and periods. It's also the reason for the spherical shapes of the planets, and for the existence of atmospheres, in the case of those planets that have any.
The two other terrestrial planets in our solar system with atmospheres would not support life. Venus is the hottest planet, with crushing atmospheric pressure. Anyone would die very quickly on its surface without a good space suit. Mars has a very thin atmosphere, mostly carbon dioxide (a greenhouse gas), but essentially no free oxygen either. There are other planets in our galaxy, orbiting other stars. We know what the atmospheres of some of those planets are like. So far we haven't found any much like earth, but that is because earth is small, and only recently have we developed the technology to find planets as small as ours.
They all are. If you are thinking about those that have atmospheres, it is not much protection.
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They are different because terrestrial planets is any of Earth like planets including: Mercury, Venus, Mars, and Earth. However jovian planets are the Jupiter like planets including: Jupiter, Saturn, Uranus, and Neptune
The same thing that happens to any other light; some of it is absorbed by the atmospheres and surfaces of the planets while some is reflected back into space. Starlight is too dim to see objects by it.