Across
1
Infectious microscopic agent
4
Curved glass that refracts light
5
The Red Planet
7
Particle of light
8
Push or pull on an object
Down
2
Reddish electrical conductor
3
Blocking of light by a celestial body
5
Naturally occurring inorganic solid
6
Absolute temperature scale unit
9
Second lightest element
10
Ball of burning gas in space
11
Precious yellow metallic element