Terrifying Planets You Wouldn't Want To Visit! | SPACE WEEK 2018

Learn about some of the craziest planets, including a planet where it's so hot it rains rocks!

#SpaceWeek2018 #DiscoverySpaceWeek

Subscribe to Discovery UK for more great clips:
http://www.youtube.com/subscription_center?add_user=DiscoveryTV

Follow Discovery UK on Twitter:
http://www.twitter.com/DiscoveryUK