Venus is closer to the Earth than any other planet. However, since it's much too hot to be of any practical use; most space exploration is done on Mars, which is slightly father away than Venus, and lot cooler than the second planet from the sun, with it's out of control greenhouse gas effect.
Mercury and Venus are closer to the Sun than Earth.
The planet that is closest to Earth depends on where the other planets are in relation to Earth. Venus can come the closest when it is on the same side of the Sun as the Earth, but Mars can be closest when Venus is on the far side of the Sun and Mars is on the same side of the sun as Earth.
.How do you know that earth isn't the other planet?
Other planets do have oxygen, but not in as high of concentration as we have here on Earth.
No planet that we know of other than Earth is capable of supporting life.
The only planet that can't be seen from earth is earth itself. Other than earth itself other planet can be seen, however sometimes it might requires use of high technology!
Earth is a planet because it makes its eay around the sun just like all the other ones do. It is a planet because it is in line with all the other planets. I hope this helped(:
Because it is nearer to the Sun than all of the other planets. Its orbit is inside that of all of the other planets, so it shorter.
beause earth is the only planet which has oxygen and other needed sudstances .
So far we have found no planet other than Earth that is suitable for human life.
earth 6 kingdoms of living things
No, there is no oxygen on any other planet other than Earth because there is no planet life on the other planets.