Someone said to me there is a big gap between Mars and Jupiter, did a planet explode? We have a asteroid belt there instead and I’m just wondering if our planets and our sun will eventually blowup. Also, did aliens have anything to do with it, blowing planets up to pave way for better evolved life? I don’t believe in aliens but I think if aliens exist, they probably blew up stuff, but like I said, it’s unlikely aliens even exist or real in our entire universe, we’re probably alone. That Stephen Hawking dude would like to know if we are alone in the universe or not, it is time now, although it’s a waste of time, it’s probably nothing but rocks and gas in space.