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No, this video isn’t proof that Earth is flat

Social media users are sharing a video of a sunset which they claim provides proof that Earth is flat and the sun is “local”, by which they mean that it orbits a flat Earth at cloud level. This is actually an optical illusion.

If you only have a minute…

  • A video of a sunset has been widely shared on social media by people who believe the sun is “local" and that it orbits at the same level as the clouds, above a flat Earth.

  • The social media users sharing the post focus on the fact that the sunset seems to be happening below the horizon and that the clouds seem to be going behind the sun.

  • However, a careful analysis of the video shows that the sunset does actually take place at horizon level. The fact that the clouds seem to go behind the sun is actually an optical illusion.

The fact check, in detail

A video showing a sunset that seems to happen below the horizon, at the same level as the clouds, has been going viral on Facebook, TikTok and X among accounts belonging to people who believe that Earth is flat, so-called “Flat Earthers”.

This claim, however, is false, says Frédéric Pitout, an astronomer and planetary research scientist at the Research Institute in Astrophysics and Planetology in Toulouse, France, who spoke to the FRANCE 24 Observers team.

Clouds behind the sun? An optical illusion


Read more on The Observers - France 24