The vacuum of space was fatal to many living organisms without the use of some sort of EVA suit and was unable to sustain fire. The vast majority of space was a vacuum, a depressurized area devoid of atmosphere.
Realspace, also called normal space, space-normal to the Chiss, or simply space, was the dimension in which all of the galaxy's residents lived.
' Sir, the Electrum has reverted to realspace.' ―A technician, to Wilhuff Tarkin
