Across
1
Ball of burning gas in space
3
Icy body with a tail near the sun
4
Blocking of light by a celestial body
6
Molten rock beneath Earth surface
7
Unit of power
8
Mass per unit volume
9
Absolute temperature scale unit
Down
2
Force that attracts objects together
3
Solid with repeating atomic pattern
5
Preserved remains of ancient life
10
Measure of matter in an object