Neil DeGrasse Tyson Weighs In On Thor’s Hammer

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Astrophysicist Neil deGrasse Tyson has often times bridged the gap between science and science fiction. Whether it’s pointing out the scientific plot holes in movies like The Avengers or Prometheus, Tyson strives to make science as accessible as geek culture. So this week, Neil deGrasse Tyson took to Twitter to weigh in on the strength of Thor’s hammer, Mjölnir. Read his tweet below.


The good people at Slate took Mr. Tyson’s claim and ran with it. Considering the maximum weight of an elephant is about 15,000 pounds, Thor’s Mjölnir would weigh in at a whopping 4.5 quadrillion pounds. Now that’s heavy!

Tyson later tweeted photographic evidence of Thor’s Mjölnir to back up his claim. Tyson must be a strong guy to lift Mjölnir, seeing that The Hulk had trouble picking it up in The Avengers. Check out Neil deGrasse Tyson’s TwitPic below.


This isn’t the first time Neil deGrasse Tyson has weighed in on comic book folklore. A few months ago, Tyson appeared in an issue of Action Comics. In the issue, Tyson explained that the star system LHS 2520 housed Superman’s proper birth planet, Krypton.

He also stated that the original Starship Enterprise from Star Trek was the best starship of all-time, because of how it changed the entire landscape of science fiction when it was introduced in the 1960s.

Watch Slate.com’s video on “How Heavy Is Thor’s Hammer Mjölnir” below.


  1. John Drake says:

    while i understand premise of the argument it is invalid because Thor (the god not the comic book guy) was linked to his hammer through the power of Odin. Mjolnir actualy has its own spirit wich loyal toThor & that is why no one else can weild it regaurdless of how much it weighs.

  2. Jeff Brewer says:

    This is a bit old school, but, if I remember my comic lore correctly, it is not the weight of the hammer, but the “worthiness” of the wielder. This is why Beta Ray Bill (is that right??) was able to wield the hammer, and why Captain America was able to handle it on a few occasions in the original run of The Avengers, while Hulk could not even shift it (nor could Iron Man, BTW…)

  3. Why is it I’m getting a flashback to an episode of The Big Bang Theory?

  4. Rick Nuthman says:

    If Thor’s hammer were that heavy it would not be able to ‘sit’ on the ground on Earth. it would be attracting all of the material around it like small moon

  5. UnRiel says:

    The Hulk cannot lift the hammer Mjolnir because of weight, it is enchanted by Odin so that it cannot be lifted unless the bearer is worthy. It is a religious artefact. Captain America can lift it because his heart is noble, but Banner in the comics at least is deeply conflicted.

  6. According to Norse legend, as far as i know Mjolnir can only be lifted by THOR…no other Asgardian can. I’m not talking about the comic-book Thor…the “real” mythologic Thor and HIS Mjolnir.