Across
1
Force that attracts objects together
3
Blocking of light by a celestial body
6
Our home planet
8
Tectonic landmass section
10
Biological catalyst
11
Substance with pH above 7
Down
1
Unit of heredity
2
Hottest planet in solar system
4
Absolute temperature scale unit
5
Solid with repeating atomic pattern
7
Reddish electrical conductor
9
Icy body with a tail near the sun