Across
1
Path of a planet around the sun
4
Basic unit of life
6
Blocking of light by a celestial body
7
Disturbance that transfers energy
Down
2
Ball of burning gas in space
3
Unit of force
5
Substance with pH above 7
8
Form of thermal energy
Path of a planet around the sun
Basic unit of life
Blocking of light by a celestial body
Disturbance that transfers energy
Ball of burning gas in space
Unit of force
Substance with pH above 7
Form of thermal energy