 Re: do you believe in aliens?
it is very possible we'll encounter alien-manufactured probes and machines before we meet the aliens themselves, because the aliens wont risk their lives to explore space themselves. just like how we send probes to visit other planets. and the alien probes may be the size of nano-bots, so small we wont even know if they were there. maybe now there are billions of nano-bots in our atmosphere and orbiting the earth watching us. | 
