Across
1
Ball of burning gas in space
4
Hottest planet in solar system
5
Basic unit of life
6
Unit of energy
10
Absolute temperature scale unit
11
Our home planet
Down
2
Blocking of light by a celestial body
3
Unit of power
5
Icy body with a tail near the sun
7
Nerve cell in the brain
8
Element found in all living things
9
Tissue that contracts for movement