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