Yes. Most of the planets in our solar system and presumably most of the extrasolar planets too have a range of amounts of oxygen present. However, only on a very few of them is it in elemental form; on the others it is combined with other elements such as on Venus in the form of carbon dioxide and on Mars in the form of iron oxides.
So far only Earth is known to have significant amounts of oxygen in its atmosphere.
es. Most of the planets in our solar system and assumably most of the extrasolar planets too have a range of amounts of oxygen present.
yea from the IBRO >:)
It has water and air unlike all other planets.
Because they are just for aliens. Aliens don't have to breathe, but we do.
No
It is because some of the planets are farther from the sun
All planets have gravity- Some more than Earth, some less. Other planets that are large enough do have air- but not made up of the same gasses as Earth.
Beacuse earth has water air and Sun the moon has no air or no Sun or water only earth is a life planets the other planets are the same like moon they had no air or Sun and water
earth has air , water and life.
It has water and air unlike all other planets.
it is possible to live on because there is water and air
because there is no air and the other planets are far away to visit.
Because they are just for aliens. Aliens don't have to breathe, but we do.
No
Antarctica can see the planets so well as there is no smoke or gas polluting the air s you can see into space were as in other places in the world you cant see through the smoke and gas in the air!
It is because some of the planets are farther from the sun
what do you mean use other planets?
Yes.