To the definition the Sun to us, the Earth

One revolution around the sun = One revolution

365 days its our solar system, the Earth habitat sphere allowances to "allow the human life to populate on the surface of the Earth." In which means, there are temperature and the water or the water vapor exists, that holding up that Earth sphere in breathing condition, what we define the Creation are must be breathing only on Oxygen.

That is the definition how we human related to another being, they must breathing on Oxygen.

Oxygen that is, not 4/5 Nitrogen or 1/5 Oxygen divide, to say, there is any room for the methane to talk about the explosion, that would be terrible.

No one exists in this context, that is the purely definition we see nothing else creation other than human on Earth, Mars are the barren lands. Its an official notice from NASA. Their Surface of the Mars.