All the organisms in an environment living together
ecosystem
A rounded place that forms the roof of a building
dome
What is the "red planet"?
Mars
About the mind
psychological
What astronauts wear in space
spacesuit
Food that is packed so it can be eaten in a long time
dried food
Part of the body that can move
muscle
It is energy that comes from a source
radiation
The space outside the earth's atmosphere beyond the earth and moon
deep space
When you don't feel any weight at all
Low gravity