Subject / Started by
Using airline flight data.

Started by 3DGeek « 1 2 3 ... 18 »

Satellites

Started by BillyBob « 1 2 3 ... 10 »

Pros and Cons for a flat Earth

Started by huh? « 1 2 3 ... 7 »

South Pole

Started by alex « 1 2 3 ... 6 »

Sunrise and Sunset

Started by Merkava « 1 2 3 ... 6 »

OK, got one. Straight lines

Started by aston240 « 1 2 3 ... 6 »

Gravitational Waves

Started by rubberbands « 1 2 3 ... 6 »

Line of sight communication

Started by noonenoone « 1 2 3 ... 6 »