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.
Posts: 440. You can't vacuum the system with a Mighty vac. You need an electric vacuum pump or an a/c recovery/recycling machine to do it. If the system is leak free, it should pull down to nearly 30 inches of vacuum in just a few minutes but should be vacuumed for 30 minutes minimum but 45 to 60 minutes is best.Vacuum pump shut down afterwards, the system should hold vacuum for at least 10 minutes.Then recharge.f the system is leak free, it should pull down to nearly 30 inches of vacuum in just a few minutes but should be vacuumed for 30 minutes minimum but 45 to 60 minutes is best.