I realise how stupid the question may sound, but this is a genuine question that I was just pondering about late at night. I mean, the question I really ask is why is there gravity on Earth but not in space. Is it our atmosphere that "keeps" gravity here? Or is our atmosphere just the limit of the strength of the gravity Earth possesses? Either way, I ask because I was just wondering why say there is still gravity in a vacuum (and no I do not think gravity has anything to do with "air" but still) and why we can't recreate it. Is gravity caused just by the spinning of the world? Anyways if the answer is too long or too simple I understand if you just write "you're an idiot". Just me wondering late at night and me envisioning futuristic anti-gravity flying vehicles. Don't go into too much effort into answering but I would like a response - even if its just a link or a reference to read something else I'll be happy. PS. I am not religious this isn't a satirical, rhetorical question to argue anything, I really would like a constructive answer.