Across
1
The Red Planet
2
Particle of light
4
Second lightest element
5
Disturbance that transfers energy
Down
1
Natural satellite of Earth
2
Tectonic landmass section
3
Compound containing oxygen
6
Blocking of light by a celestial body
The Red Planet
Particle of light
Second lightest element
Disturbance that transfers energy
Natural satellite of Earth
Tectonic landmass section
Compound containing oxygen
Blocking of light by a celestial body