YES! it isbecause if their is life on another planet, if anything goes wrong we can go to that planet.
It is important in case there is life beyond Earth.
none
Differentiation occurred in other inner planets, besides Earth.
the one that paul comes from
most likely
Yes.
mars
Yes. Besides earth there are seven other major planets and 5 recognised dwarf planets.
no because there is no oxogen in space
to have something to look at when you can see them
The inner planets (except Earth), and in fact all of the planets besides Earth in our solar system, were named after Greek and Roman gods.
All planets in the solar system, besides earth, are airless. These planets are not able to contain human life.