Across
1
Magnetic metallic element
2
Solid with repeating atomic pattern
3
Fourth state of matter
5
Nerve cell in the brain
7
Naturally occurring inorganic solid
8
Blocking of light by a celestial body
Down
2
Reddish electrical conductor
4
Compound containing oxygen
6
Form of thermal energy
9
Ball of burning gas in space
10
Unit of energy
11
Path of a planet around the sun