1.
When one celestial object blocks another.
2.
FLARE A burst of energy from the Sun.
3.
BOREALIS The Northern Lights.
4.
AUSTRALIS The Southern Lights.
5.
The distance light travels in one year.
6.
A star that sends out radio waves.
7.
A super-bright area around a black hole.
8.
The force that holds planets and stars together.
