I downloaded the Linux file's but it said it can't run this type of file could the community help me please

I know. Everything should be a toy. But the rocket is bigger than the moon.

3D gravity is something ive tried hard to work on, but realistic orbiting is something i havent attempted to replicate c...

How should we update? Does the game install it automatically, is there a button to press or do we reinstall the game in...