In stars, energy is produced primarily as hydrogen atoms are combined to form
a. helium atoms.
c. oxygen atoms.
b. carbon atoms.
d. nitrogen atoms.

D. Nitrogen Atoms 
Because of stars, our whole SPACE is mostly made of nitrogen, which gives CME's their colors! CME stands for Coronal Mass Ejection.
A CME is the TRUE scientific full name for the Aurora Borealis, otherwise known as the Northern Lights! :-)

Rethink and reinvent