10 Amazing Extraterrestrial Discoveries That Could Prove Aliens Exist

alltime10sPublished: August 7, 20174,248 views
Published: August 7, 2017

Is there life on Mars? Could the newly discovered planets around Trappist-1 be home to aliens? Alltime 10s investigates, with 10 Biggest Discoveries In The Search For Alien Life. This video was inspired @LionsgateUK's release of #Valerian which is in cinemas now!

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