Could there be life on other planets? vocab

Front

a scientist who studies outer space

Back

astronomer

Front

the air that surrounds a planet

Back

atmosphere

Front

describes when there is a lot of visible light; the opposite of dim

Back

bright

Front

a type of gas that plants sometimes take in and that animals release when they breathe

Back

carbon dioxide

Front

describes when there is not a lot of visible light; the opposite of bright

Back

dim

Front

a planet that orbits a star outside of our solar system

Back

exoplanet

Front

the area around a star that is not too hot or too cold for liquid water to exist

Back

Goldilocks zone

Front

a place with conditions where a living thing can survive

Back

habitable

Front

a large, round object in outer space that orbits a star

Back

planet

Front

all the objects that orbit around a star

Back

solar system