If you believe in aliens, do you honestly think they have visited Earth before? When I say aliens I mean some type of being that's from another planet. Maybe a little green monster or something that resembles a human, either way, do you think it's possible that they've visited Earth before?

I 100% believe in aliens, I'm not sure what I think they look like but it's hard for me to think that out of all the planets in the entire galaxy that Earth is the only one to hold life. Now I'm not exactly sure if they've visited Earth before but I think it might be possible.