National Geographic ChannelNat Geo WildNat Geo PeopleNat Geo People

Known Universe

|   webisodedescription|   hidedescription

Scientists working to defend us from a cataclysmic crash, before we explore deep space collisions on a colossal scale.

Fighting Asteroids

|   videodescription|   hidevideodescription

Explore deep space collisions on a colossal scale and find out if scientists can protect the planet from asteroids.

duration: (03:01)Genre: Science

morevideosfrom Known Universe