Across
1
Unit of force
5
Our home planet
7
Unit of electric potential
8
Blocking of light by a celestial body
12
Magnetic metallic element
Down
2
Biological catalyst
3
Path of a planet around the sun
4
Curved glass that refracts light
6
Unit of power
9
Solid with repeating atomic pattern
10
Icy body with a tail near the sun
11
Precious yellow metallic element