Today's question comes from Malia via Rountree Elementary (tomorrow's question will be from Cordelia, who was apparently named after the good daughter in King Lear).

What does fire look like in space? 

MAGNUS: We actually do investigate the combustion process up here for a variety of reasons. Basically, without convection, fire stays more or less contained as a little ball and if there is no flow of oxygen to it, it will go out. There are no air currents, unless we introduce them, to move the air towards the fire and re-supply it with oxygen. One of the first things that would happen if we were to have a fire on the ISS is to stop all of the fans from running to keep from feeding the fire fresh oxygen.