Across
1
Icy body with a tail near the sun
4
Nerve cell in the brain
7
Reddish electrical conductor
8
Compound containing oxygen
10
Magnetic metallic element
Down
2
Positive particle in nucleus
3
Center of an atom or cell
5
Glass that splits light into spectrum
6
Amplified beam of light
8
Path of a planet around the sun
9
Blocking of light by a celestial body