Ever wonder how much Thor’s magic hammer would weigh in real life? If so, then astrophysicist Neil deGrasse Tyson is probably the person you’d want to talk to. According to one of his tweets yesterday, he computed the calculations and determined that the hammer must weigh as much as 300 billion elephants. Continue reading for a video and more information.

While Tyson didn’t specify exactly what kind of elephants or how much each of them weighs, we’ll stick with the common African elephant, which are on average 11,900 pounds each. After multiplying that number by 300-billion, you get 3.57-quadrillion-pounds.

[Sources 1 | 2]