Because they reflect light
Aurora Borealis is known as the northern lights.
No. In fact the aurora borealis and the aurora australis are very beautiful sights.
The Aurora Borealis is in the Thermosphere.
Aurora borealis is another name for the Northern polar lights.
Thermosphere, to be specific Ionosphere.
''Aurora'' means Dawn and ''Borealis'' means North. So basically Aurora borealis means ''Dawn of north''.
Aurora Borealis is caused by particles hitting earth's atmosphere thermosphere and they are stopped, so they give of their energy in the "Northern Lights" or Aurora Borealis.
aurora borealis Aurora Borealis (pronounced: a-roar-uh boar-ray-lee)