I don't believe so. I don't believe in such.
Aliens are seen in movies only. I used to watch Roswell before. It is a TV series about siblings who are aliens. I like how the story revolved but I didn't get to know the ending of the series. I am not even sure if it ended or if they decided to end it from viewing.
I do know for a fact that the lead female actress - Appleby - something.. posted a nude picture of her on Instagram or was it on Twitter? Then there's Katherine Heigl who I think by far is the most successful in her showbiz career.
Anyway, enough of the alien stuff. There are no aliens. Period.