Across
1
Precious yellow metallic element
3
Blocking of light by a celestial body
6
Biological catalyst
7
Ball of burning gas in space
Down
2
Particle of light
4
Basic unit of life
5
Infectious microscopic agent
8
Curved glass that refracts light
Precious yellow metallic element
Blocking of light by a celestial body
Biological catalyst
Ball of burning gas in space
Particle of light
Basic unit of life
Infectious microscopic agent
Curved glass that refracts light