To go away and not be there anymore.
Disappear
A person who lives in a place.
Inhabitant
What is a century?
100 years
The number of people that live in a place.
Population
What does it mean "International"?
Worlwide; used in all parts of the world.
A piece of rock in space that burns with a bright light when it gets near earth.
Shooting star
What's the solar system?
The sun and all the planets.
A place where people live and work in space.
Space station
Who is an astronaut?
A person that travels in space.
An object in space that looks like a bright star and has a long tail.
Comet
A vehicle that travels in space, carrying people.
Spaceship / space shuttle
A valuable stone found under the groundm which looks like shiny glass.
Diamond
What does it mean "precious"?
Something very expensive and special.
The outside part of something, which you can see and touch.
Surface
What does it mean "snug"?
Feeling warm and comfortable.
A large round object in space that moves around a star (such as the sun) and receives light from it.
Planet
What does it mean "bumpy"?
Going up and dowm; not flat.
To say that you think something will happen.
Predict
What is a clue?
A piece of information that helps you to find an answer or an explanation.
To go round and round very fast.
To spin
An underwater environment with beautiful structures made by very small sea animals.
Coral reef
A building where you can go to look at paintings and other art.
Art gallery
A place where ships can be tied up safely by the shore, where there are no high waves.
Harbour
A type of long, flat boat used in the past to carry things along canals and rivers.
Barge
What does it mean "beam"?
A line of light