Re: Take your pick:
Oxygen.
Perhaps a touch of magnesium
Could be Nickel
What’s ‘in’ our atmosphere may have something to do with it too:
http://www.windows.ucar.edu/spaceweather/basic_facts1.html
Space/Science » in reply to I'm serious. What does it mean if it's green? Ø
Oxygen.
Perhaps a touch of magnesium
Could be Nickel
What’s ‘in’ our atmosphere may have something to do with it too:
http://www.windows.ucar.edu/spaceweather/basic_facts1.html