Across
1
Particle of light
4
Hottest planet in solar system
5
Glass that splits light into spectrum
6
Precious yellow metallic element
7
Icy body with a tail near the sun
10
Amplified beam of light
Down
2
Preserved remains of ancient life
3
Naturally occurring inorganic solid
4
Infectious microscopic agent
8
Unit of force
9
Chemical element in table salt