Across
1
Solid with repeating atomic pattern
3
Molten rock beneath Earth surface
4
Icy body with a tail near the sun
5
Group of similar cells
6
Ball of burning gas in space
7
Blocking of light by a celestial body
8
Biological catalyst
Down
1
Basic unit of life
2
Tectonic landmass section
3
Tissue that contracts for movement
4
Reddish electrical conductor
9
Particle of light
10
Hottest planet in solar system