Here's everything I think proves the round earth, I hope I get disproved!
You already painted yourself into a corner of failure when you used words "proved" like "disproved". What you have presented is not PROOF. What you have presented is EVIDENCE which, in your OPINION, supports a round earth model. I can not PROVE anything. I can, however, provide either contracting EVIDENCE. I can also provide EVIDENCE which suggest that the EVIDENCE you have presented it more about some other phenomenon and less about the shape of the earth.
In addition there are many flat earth models which present the same evidence as supporting a flat earth model. There are tilted flat earth models in which the tilt of the flat earth can contribute to seasons.
1: tilt of the earth causes seasons (hemisphere is closer during summer, further during winter).
2: Eclipse shadow is round, not an ellipse.
3: Can bring the sun back into view after sunlight by flying a drone above the curve.
4: Iake Pontchartrain power lines.
5: Occam's Razor
6: Trips to the South Pole (before satellite images) should have documented what the map looks like, but they didn't.
7: Water bottle when viewed horizontally in an airplane doesn't line up with the horizon.
8: Human eye can see 5 kilometer when on the ground, but from higher up you can see further over the curve (can see Iran on Burj khalifa, can't on eye level)
9: Conspiracy is too big, and private companies/foreign nations should have no interest in keeping the conspiracy alive (SpaceX, INCOSPAR, CNES, etc.).
10: Ships sink into the horizon, even in clear weather.
11: Different stars in different hemispheres
Here I will not present any PROOF. I will present EVIDENCE and alternate THEORIES to your observations.
1. The length of day is longer in the summer and shorter in the winter which is the cause of seasons not the tilt of the earth.
1. There are some flat earth models in which the earth is tilted so this claim could be made about the flat earth.
2. There are many ideas about a lunar eclipse and no uniform response. Different models have different ideas.
2. There are flat earth models which claim this observation supports a flat earth.
2. The light from the sun is refracted through the atmosphere which causes a round circle when in fact it's not really round.
3. Because the air is thinner at higher altitudes an increase in altitude will logically bring things back into view on a flat earth as well.
4. Contradicting evidence presented in this thread.
4. photoshop
4. Refraction
5. Occam's razor, known as the law of parsimony (Latin: lex parsimoniae) is the problem-solving principle that essentially states that "simpler solutions are more likely to be correct than complex ones. In many cases a flat earth is simpler than a round one therefore more likely to be correct.
6. There are many flat earth models in which observations made to trips to the south pole match predictions made in those specific flat earth models.
6. There is no south pole therefore observations made at some random snowy place don't have any bearing on anything
7. Refraction again
7. There are flat earth models which predict this will happen and therefore supports those specific flat earth models.
8. Refraction again
8. There are flat earth models which predict this will happen and therefore supports those specific flat earth models.
9. I have not really researched the conspiracy aspect of this.
10. Refraction again
10. There are flat earth models which predict this will happen and therefore supports those specific flat earth models.
11. Refraction again
11. There are flat earth models which predict this will happen and therefore supports those specific flat earth models.
more detail about 10 and 4.
If something in the distance disappearing from the bottom up = round earth then, based on the time lapse video shown below, the earth alternates between being round and flat. Which round earthers and flat earthers alike will both disagree on.
This video STRONGLY suggests that something can disappear in the distance from the bottom up without any curve at all.
Just because we observe an arrow facing right does not mean that it is really facing right. Many of your refraction based claims are like saying if there is a right arrow then the earth is round. Look there is a right arrow. When, after removing the refractive material, we can easily see the arrow facing left.