Mysteries of #Gravity was Neil DeGrasse Tyson's media phenomenon where he openly fact-checked Gravity on his Twitter page. Ironically, the astrophysicist was mistaken by saying that Dr. Ryan Stone is a medical doctor, which he stated twice. (She was a biomedical engineer who invented an X-ray imaging device)


It was a series of ten tweets on October 6, 2013 that gained notoriety and media attention, which prompted Tyson to clarify the following day that he enjoyed the film immensely. Tyson had previously weighed in his opinions on films such as Titanic, where he pointed out that the star field in the sky was inaccurate, prompting James Cameron to fix the mistake with Titanic's 3D re-release. 


  1. The film #Gravity should be renamed “Angular Momentum”
  2. The film #Gravity should be renamed "Zero Gravity"
  3. Mysteries of #Gravity: Why Bullock, a medical Doctor, is servicing the Hubble Space Telescope.
  4. Mysteries of #Gravity: How Hubble (350mi up) ISS (230mi up) & a Chinese Space Station are all in sight lines of one another.
  5. Mysteries of #Gravity: When Clooney releases Bullock's tether, he drifts away. In zero-G a single tug brings them together. 
  6. Mysteries of #Gravity: Why Bullock’s hair, in otherwise convincing zero-G scenes, did not float freely on her head.
  7. Mysteries of #Gravity: Satellite communications were disrupted at 230 mi up, but communications satellites orbit 100x higher.
  8. Mysteries of #Gravity: Why we enjoy a SciFi film set in make-believe space more than we enjoy actual people set in real space?
  9. Mysteries of #Gravity: Astronaut Clooney informs medical doctor Bullock what happens during oxygen deprivation.
  10. Mysteries of #Gravity: Nearly all satellites orbit Earth east to west yet all debris portrayed orbited west to east.
  11. My Tweets hardly ever convey opinion. Mostly perspectives on the world. But if you must know, I enjoyed #Gravity very much.

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