Question

Will iron rust in outer space? Why? (Hint: Essential conditions for rusting)​

Answer 1

Answer:

Surprisingly, yes. Earth's atmosphere still contains oxygen up to about 700km altitude (the ISS orbits at 400km). At that altitude, oxygen exists as single atoms, rather than O2 molecules, and it is more reactive. ... In deep space, however, the lack of oxygen means that corrosion does not occur.

Answer 2

Answer:

Surprisingly, yes. Earth's atmosphere still contains oxygen up to about 700km altitude (the ISS orbits at 400km). At that altitude, oxygen exists as single atoms, rather than O2 molecules, and it is more reactive. ... In deep space, however, the lack of oxygen means that corrosion does not occur.