Across
1
Blocking of light by a celestial body
5
Absolute temperature scale unit
6
Icy body with a tail near the sun
7
Amplified beam of light
8
Our home planet
Down
2
Gas essential for breathing
3
Group of similar cells
4
Tissue that contracts for movement
9
Preserved remains of ancient life
10
Element found in all living things
11
Glass that splits light into spectrum