Eye Level Horizon | High Altitude

certainly looks flat.

How does heat or even light travel through a vacuum?

There are many questions i would like nasa and fuckwits like Neil Dumass Tyson to explain bit those three will do for now!

How does a vacuum exist side by side with a pressure system without a barrier seperating the two?

Yip. Flatter than a pancake. Always has been and always will be. Not a ball! Not Spinning or moving at all! i'd find it harder to believe anyone could keep thier hair on if it were superglued to thier skulls were it revolving at 1,000 miles per hour. Yes the sun is in the sky not in the imaginary empty vacuum of suposed space. How anyway if it were in an empty oxygenless vacuum would a suposed ball (the sun that is) of aparantly pure hydrogen gass even ignite let alone burn? And even if it were, does hydrogen gas actualy burn? Does it at a consistant rate? Steadily or immediately? And if immediately, doed it reproduce itself? And if so how? And if this is even answerable, how does it reproduce itself at a faster rate than it expends itaelf??? Just curious haha!