A question on heat in space.?

[Simon O]

Science in high school will tell you that heat rises, pretty evident.
But what happens in space? Without a gravitational field present how does heat dissipate? Do the particles spread out everywhere as its colder in all directions?

 

[dude]

moving particles give off electromagnetic energy, heat is usually considered to be infrared when it's in temperatures that humans are used to.

The particles in the atmosphere vibrate more when heated, this radiated energy goes in all directions, including back into space.

When they say heat rises, that doesn't mean that it's the only possible way for it to move, they just mean that here on earth, a hot air mass will rise above cold air masses b/c the hot one is less dense.

Heat can radiate regardless of any gravitational well. (unless it's a black hole of course)

 

[AdkG]

only way for heat to transfer through space is by the process of radiation, this is how we get the heat from the sun.