Italian astronaut on space station sets new mission duration record by a woman. European Space Agency astronaut Samantha Cristoforetti enjoys another sunrise aboard the International Space Station. On June 6, she set a mission duration record for women in space.
Chemist for uranium nuclear fuels. A substance would only burn in a vacuum if it contained an oxidizer. There has to be an oxidizer for there to be fire. That doesn't mean that it requires oxygen, just a substance that facilitates the removal of electrons. 1 person found this useful.
Efficiency. Direct vent fireplaces burn natural gas or propane like traditional fireplaces; however, they convert most of the fuel to usable heat. They are completely sealed off from the interior rooms by a glass door, which prevents significant heat loss.