Across
1
The Red Planet
4
Amplified beam of light
6
Unit of energy
7
Blocking of light by a celestial body
Down
2
Glass that splits light into spectrum
3
Reddish electrical conductor
5
Second lightest element
8
Smallest unit of an element
The Red Planet
Amplified beam of light
Unit of energy
Blocking of light by a celestial body
Glass that splits light into spectrum
Reddish electrical conductor
Second lightest element
Smallest unit of an element