Front

What is the term for a person trained to travel and work in space?

Back

astronaut

Front

What is a massive system of stars, gas, dust, and dark matter bound by gravity?

Back

galaxy

Front

What do we call an object that orbits a larger celestial body?

Back

satellite

Front

What is the force that attracts objects with mass toward each other?

Back

gravity

Front

What term refers to the sun and all objects orbiting it?

Back

solar system

Front

What is a spherical celestial body orbiting a star called?

Back

planet

Front

What is the third planet from the sun, known for supporting life?

Back

Earth

Front

What is the study of outer space using spacecraft and telescopes?

Back

space exploration