26.5
it depends on the deepth
The Earths core is. And that would mean it is hotter than the Sun!!
The earths temperature varies for example living on the equator it would be hotter but up in the north lets say iceland it would be a lot colder so there is no real earths temperature(unless you get to the core of the earth)
it is 65
29
Heats it up
Mars
radioactive decay
1000
it depends on the deepth
temperature increases with depth
it depends on the deepth