Across
1
Absolute temperature scale unit
5
Path of a planet around the sun
6
Our home planet
7
Amplified beam of light
Down
2
Icy body with a tail near the sun
3
Infectious microscopic agent
4
Center of an atom or cell
8
Unit of power
Absolute temperature scale unit
Path of a planet around the sun
Our home planet
Amplified beam of light
Icy body with a tail near the sun
Infectious microscopic agent
Center of an atom or cell
Unit of power