1. Lunar eclipses.
2. The Foucault pendulum.
3. What keeps the "ice wall" around the perimeter of the flat Earth from melting or breaking off?
4. What keeps the Earth's atmosphere from spilling out into empty space? (The universe can't be filled with air uniformly because atmospheric pressure decreases with altitude.)
5. The International Space Station, visible to the naked eye, flying overhead.
6. Things disappearing over the horizon.
7. Time zones!
8. Stellar parallax.
@hector 1 - space tarp and/or smoke and mirrors
2 - I don't know what that is but it sounds like made up science mumbo jumbo so it probably isn't real
3 - Why would it melt? It's a massive amount of ice and it's very cold
4 - Space being empty is a lie, it's actually just full of "space-air" for lack of a better term. Pressure feels lower as you go higher because of the higher concentration of space-air in the atmosphere.
5 - I don't see how this disproves flat earth, we can see birds and planes in the sky too.
6 - Think of it similarly to "draw distance" in a computer game - things look smaller the further away they are and eventually they look too small to see. If we could see infinitely into the distance, we'd be able to see individual feathers in full detail on a bird soaring miles above us, but we can't. Are you going to say the curvature of the earth causes that, too?
7 - This doesn't even make sense. Shine a light at one corner of a flat map and you'll see it's brighter on that side than the other. That's how timezones work, flat earth or spherical earth model.
8 - The stars move.
You spherical earthers all think you're so smart because you can use big words like parallax and pendulums when really you don't even think of your arguments beyond "I use bigger word, I am more smarter".
