u/pavelpotocek

Instead of round Earth in flat space, why not have flat Earth in round space?

It's not even that big of a stretch - we live in a curved space-time anyways. And thanks to Einstein, all physics work in curved space-times just fine.

I plotted the Artemis trajectory as a "proof" that I am not just making it up (picture 2).

TL;DR: It's just a coordinate transformation of normal space to spherical coordinates with a logarithmic radial dimension. It is silly, just an exercise in weird maths, but it works. Get a friendly physicist to explain it, if you don't trust me 😀

Some features:

• The Universe is a tall cylinder
• Sun and moon are the same size: about 60km wide.
• Astronauts on the Moon would be just around 3cm tall.
• Stars are 3 times further than the Sun and reaaally tiny (as they should).
• If you went to Australia, you would be elongated. If you stood on the South pole, you would wrap around the whole disc.
• At the edge, there is a singularity. But space can also be extended beyond the edge to repeat itself (see image 3).
• Ships still disappear below horizons. It's not because Earth curves down, but because light curves up (image 4). The result is the same.

EDIT: I made a GitHub repo for the model. Improvements and stars are welcome 🤣