Across
1
Our home planet
2
Curved glass that refracts light
3
Absolute temperature scale unit
5
Unit of heredity
7
Amplified beam of light
Down
1
Blocking of light by a celestial body
4
Compound containing oxygen
6
Form of thermal energy
Our home planet
Curved glass that refracts light
Absolute temperature scale unit
Unit of heredity
Amplified beam of light
Blocking of light by a celestial body
Compound containing oxygen
Form of thermal energy