Big, round and circles a star.
Pluto
I dont know. planet earth is mistory
space
Hot
aliens did that
One of the characteristics are that it is the only planet that humans can survive on.
aliens did that
gas
figure it out
never will i qwkjd2oieu3uunh3d4u
Pluto because it is very small and it's surface is rocky.
This is impossible to answer for a planet with unknown conditions or characteristics.