Vesurel

Vesurel t1_iugc720 wrote

Nitrogen in its most common form N2 is very stable the triple bond between the two atoms takes a lot of energy to break. Compared to O2 which only has a double bond between them meaning it's much more reactive.

Both nitrogen and oxygen are necessary for life, but they have different chemical properties that mean they'll be used in different ways.

1

Vesurel t1_irv67py wrote

For us to not see it, it would have to be less bright than alpha centauri. It's not like we're searching a 3d space for starts, we're searching the '2d' sky, so it's not like we're going to find out there's a bit of sky we didn't know was there before. So instead we'd find new starts by getting better at detecting fainter and fainter lights in the sky we already know about.

So it's a question of how likely a star within the range of alpha centauri would both meet the requirement for being a star but be fainter in the sky than entire galaxies billions of times further away look to us.

16