An idea you test to see if it is true
Hypothesis
A vehicle used to travel into space
Spaceship
The force that pulls things toward each other, it prevents us from floating off the Earth
Gravity
People who move to live in a new area
Settlers
A bright streak of light made by a rock burning in the atmosphere
Shooting Star
Watching something carefully to learn about it
Observation
The path something takes around a planet or star, also the name of a popular brand of chewing gum brand
Orbit
Related to the sun (starts with S)
Solar
When something becomes bigger
Expansion
A piece of space rock falling toward Earth
Meteor
Testing ideas through practical activities
Experimentation
A person who travels to space for fun
Space Tourist
When the sun or moon is blocked from view
Eclipse
To change a planet so humans can live on it
Terraform
A large rock that orbits the sun
Asteroid
Other experts checking your scientific work
Peer Review
To create a settlement in a new place, such as another planet
Colonise
Without an end or limit
Infinite
A small base in a faraway or difficult place
Outpost
Related to the moon (starts with L)
Lunar
When most scientists agree on the same explanation
Scientific Consensus
A possible tunnel in space-time connecting distant places
Wormhole
A region of space with gravity so strong that nothing can escape
Black Hole
The gradual loss of order in a system (starts with E)
Entropy
Something difficult to explain or understand
Mystery