For the first time, astronomers have found molecular oxygen — the same gas humans need to breathe — in a galaxy outside the Milky Way. Oxygen is the third most common element in the cosmos, after ...

Scientists have found that molecular oxygen around comet 67P is not produced on its surface, as some suggested, but may be from its body. The European Space Agency’s Rosetta spacecraft escorted comet ...

Singlet oxygen can be damaging in both cells and batteries but it has taken almost 60 years to work out exactly when it shows ...