Across
1
Natural satellite of Earth
4
Blocking of light by a celestial body
7
Path of a planet around the sun
8
Molten rock beneath Earth surface
10
Force that attracts objects together
12
Fourth state of matter
Down
2
Hottest planet in solar system
3
Gas form of a liquid
5
Particle of light
6
Group of similar cells
9
Amplified beam of light
11
Push or pull on an object