VIDEO : These Celebrities Believe In Aliens

Do you believe in aliens and UFOs?
Some celebrities do!
Business Insider published a list of stars who believe that life exists in places other than planet Earth.
Some say that they've even had "encounters" with UFOs.
Their list of celebrities who have publicly expressed a belief in aliens includes:
1. Nicole "Snooki" Polizzi: The reality star once tweeted "Aliens are real."
2. Katy Perry: The pop-musician wrote a song about aliens.
3.