I love how the commentator says, "that's what science is all about." which, after watching this video means science is about playing with crap. That means science is cool.

I wonder why those astronauts believe anything they do is sciencejust because they're in space. Like, "you know what, let's set a fart on fire in space to see what's the outcome... for the sake of science"!

Hot air doesn't rise, thus a burning flame takes on a spherical shape. It also burns slower as the lack of convection currents makes the oxygen less accessible. This is has been proven by playing with matches in orbit. So my guess is Jeihot, it would look something like a lava lamp, but with fire. Science at its best, to be sure.