But pretty cool. Behold, metallic oxygen. It’s red.

And I wouldn’t bet against someone coming up with a use for it. Or something like it:

…high-pressure techniques have already been used to create ultrahard materials such as diamond. Other chemicals, such as nitrogen and carbon monoxide, form solid polymers under pressure that store a lot of energy. If similar structures could be retained at atmospheric pressure, they might make excellent rocket fuel, suggests McMahon.

[Via Geek Press]