Memes, Neil deGrasse Tyson, and Avengers: FACTS  COMIC  According to Neil deGrasse  Tyson, if Thor's hammer,  Mjolnir, is made of neutron  star matter, then its weight  would be as much as 300  billion elephants. marvelousfacts marvelcinematicuniverse marvelentertainment avengers thor marvelthorragnarok likeforlike commentforcomment