Why don't we settle the debate once and for all? Flat-earthers and Sphericle-earthers fund a UAV trip to the edge of the earth? Surely, if there is an edge, we can reach it, right!?
Sounds like a plan... I will do that experiment for 500 000 000 dolars for you (photodocument the fly from Tasmania to Falkland Islands over south pole, with hope we will be able to see "South Pole Telescope", but cannot guarantee it

).
If you wana to see just the edge, and are not interested about anything else, it will be cheaper, something about 500 000 dolars will be enought (way cheaper then NASA) ...
For that amount of money I will deliver this:
- 10 photos of my plane shot down by goverment agencies that tried to deny my experiment
- 30 photos of white snow (aka Antarctica)
- 5 photos of "the edge" ---- dont bother with result, just select one of these:
- 5 precolision photos - "sky from 5cm distance" like photos
- 5 photos that prove "you cannot photograph edge, its too cold" ... camera completly frozen/ camera shows just black (shot on polar day!!!!)
- 5 painting of drone trajectory ended with a black point where the drone disappeared (select map of your desire).
Cheapest variant is If just drawings in "stick man" quality will be enough .... I will do that for 50 000 dolars

I mean it real... if you give me those money I will deliver what promised

... if is it too much, then find someone else