I'm not perfectly sure if this is the right forum, but I put it here because there is no "general physics" forum. Oh well...
The state of a mass can be altered by changing either heat or pressure. Heat any solid and it becomes liquid, then gas, then plasma. Increased pressure, on the other hand, makes a mass "harder" (for instance liquid oxygen in tanks)
1) In space there is no pressure. But not all matter in space is plasma. Or is it? Why/why not?
2) What kind of pressure would it take to create a pure hydrogen cube of 1 ccm at 0 degrees C. Put the answer in elephants please
I am very very uneducated, enlighten me!