Answer:
plasma
Step-by-step explanation:
just not photosynthesis or gravity so it has to be plasma
also:
The aurora borealis (northern lights) form when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere.
and
Because it consists of charged particles, plasma can conduct electricity and respond to a magnetic field.
^^bolded stuff is connected points to make plasma the answer
