Star Wars often takes liberties with science in the name of entertainment, but I have a particular bugaboo with ice planets. The very first line of this episode tells us that the bleak, icy landscape shown is the "tropical zone."
So where is the oxygen coming from? If the characters are able to breathe without helmets or environmental suits, the atmosphere must contain oxygen. If the entire planet is frozen, there is no vegetation, and therefore no source of oxygen. It doesn't make any sense, and I'm having trouble accepting it over and over.
So where is the oxygen coming from? If the characters are able to breathe without helmets or environmental suits, the atmosphere must contain oxygen. If the entire planet is frozen, there is no vegetation, and therefore no source of oxygen. It doesn't make any sense, and I'm having trouble accepting it over and over.