Across
1
Solid with repeating atomic pattern
3
Form of thermal energy
5
Our home planet
7
Hottest planet in solar system
10
Natural satellite of Earth
Down
1
Icy body with a tail near the sun
2
Disturbance that transfers energy
4
Blocking of light by a celestial body
6
Amplified beam of light
8
Substance with pH above 7
9
Gas essential for breathing
11
Glass that splits light into spectrum
12
Group of similar cells