So their argument is that the experiments of Eratosthenes in regards to measuring the circumference of the earth are invalid because we only have secondary sources of his existence, therefore there's no primary sources that he exists therefore that's evidence that no one measured the circumference.

The problem with this is that you can repeat his experiment and get similar results. The fact that anyone is capable of doing this experiment means that someone HAD to have done this at some point in time.

So whether he didn't exist and someone invented him or not, the experiment still exists and is still valid as it works in accordance with known geometry.

So then ultimately, that means SOMEONE did the experiment and that it was later attributed to Eratosthenes if this is the case, but the experiment is still valid.

Also, tangentially related, but Jesus Christ only exists through secondary sources, and seldom will you see flat Earthers deny the existence of Jesus, God Almighty! The religious ones at least, which is a huge chunk of them.

One is a mathematician that measured shadows to find an angle, the other is the literal son of GOD! Rather hypocritical and a big double standard if you ask me. And I still haven't got a good reply from a flat earther about this. I just want it to make sense is all.

Usually, flatearthers try to construct a model of the Earth to explain all observable phenomena. And that makes me wonder: what model can a flatearther possibly produce that includes the sky rotating in different directions depending on whether you're in the northern hemisphere or the southern hemisphere?

Because the Earth is a ball rotating on an axis, when you're at one end of the axis, looking out, the sky will spin one way. And when you're on the other end of the axis, the sky will spin the other way. So, when you're in the southern hemisphere and you look up in the sky, it visibly spins clockwise. But when you're in the northern hemisphere and you look up in the sky, it visibly spins anti-clockwise. If the Earth is a single flat plane, how can one sky observably spin over one Earth in two opposing directions simultaneously?

Usually they have an answer, however outlandish, for an observation put in front of them. But how do you explain this? I can't think of how you can possibly respond to this single point. The two hemispheres visibly spin in opposites directions, have always done, and you can test it right now if you have a friend you can call in the other hemisphere. Or just watch any kind of sky timelapse video from the other hemisphere. It's impossible to fake and I think we can all agree on that. I doubt even a flatearther has the gumption to accuse the entire population of the other hemisphere that they're all lying or mistaken.

I've never actually heard a flatearther answer this (and I think I know why). But I actually want to hear what possible answer you could come up with for this. It would be genuinely impressive if you could show a model for a flat Earth that can account for this.

With Earth being flat and Carina Nebula only being seen on the "Southern Hemisphere" what's the explanation of not being visible in California? Help?

Just curious.

Using the thermometer to show you that the moon light is not from the sun. The moon light is cold and that’s why the shadows under the moonlight has warmer temperatures. Opposite the sun.

So we spent $713 million on LANDSAT 7 to compile 1100 images of Antarctica right? NASA could have invested in a high definition video of both earth and antarctica with a Highly Elliptical Polar Orbiting (HEPO) satellite, with an apogee 60,000km, perigee 1,000km. Currently we have 1 frame per hour video of our earth from DSCOVR at L1, geostationary satellites which match the earths orbit, and LEO satellites that can only view ~3.5 of earth from their field of view.

This would be the first high definition video (greater than 1 frame p/hour) of both our entire earth rotating, and a full size video of Antarctica.

I've compiled some rough mission costs with AI, even if it costs 10x or 100x, I am sure many people would appreciate it.

The first HEPO was 80 years ago, and the reason this hasn't been done when nasa has spent ~ $75-$100 billion on satellites in the last 20 years has made me a flat earther.

The main menu of Sunset Riders (get it?...sunsets?) starts with the sun setting on the horizon. This is because the Earth's rotation makes the sun look like it's disappearing into the ground. But don't just take my word or video games' word for it; just look outside, and you'll see. If the Earth were flat, the sun would have to just move backward in the sky instead of appearing to disappear behind the horizon. Basic perspective proves this.

Check out my proof here: https://youtu.be/bjVMgXFNa_8?si=H5R2q2avIaS0G-UO

Look lads if the earth is flat then why has the shape been lied about since Galileo?

Like, I'm genuinely curious to see explanations for this from people who genuinely believe that our planet is "flat" (to whatever degree that actually means).

The moon, every other planetoid we can observe for ourselves, and even stars, are all round. Whether that be spherical or not, no other astronomical object is flat. We can see the curvature of the moon ourselves from Earth. So why is Earth the odd one out?

How would you hypothetically explain that cyclones spin in different directions based on what hemisphere they're in.

any explanations?

I was wondering how flat earthers explains time zones...the sun should rise at the time for everyone if earth was flat...

1. Ships always sink down when they go over the horizon

2. Polaris is only visible In the northern hemisphere

3. Earth’s shadow is always a circle during lunar eclipses and never an oval shape

4. The 24 hr sun in antartica is unexplainable on a flat earth

5. People and aircraft have walked and flown over the south pole and popped out on the other side

(and no antartica is not restricted)

See, the space between alaska and russia froze over, which means that the first nations could walk over to canada

like seriously, theres not lots of proof for this, so whats yalls proof

Has anyone ever seen the moon right above them? I was looking at it the other day and thought about it, I've never had to look straight up to see the moon. Looked for photos online, can't find any. So, have you?