Science, Actually - Although colorless in its gas state, in its liquid and solid states oxygen is blue. #science #sciencefacts #oxygen #gas #solid #liquid #blue https://en.wikipedia.org/wiki/Solid_oxygen | Facebook
Steam - Oxygen Not Included Wiki
file:Electron shell 008 oxygen.png - Wikipedia
Oxygen (TV channel) - Wikipedia
Oxygen - Wikipedia
Category:Unused Resource - Oxygen Not Included Wiki