Across
1
Blocking of light by a celestial body
3
Precious yellow metallic element
5
Unit of power
9
Preserved remains of ancient life
10
Hottest planet in solar system
11
Our home planet
Down
2
Path of a planet around the sun
4
Tectonic landmass section
6
Measure of matter in an object
7
Naturally occurring inorganic solid
8
Mass per unit volume
12
Unit of force