A vehicle in which people travel into space and back again
space shuttle
Energy that is produced using the sun, wind, etc. rather than using fossil fuels that cannot be replaced
sustainable / renewable energy
A mixture of smoke, gases and chemicals, especially in cities, that makes the air difficult to breathe and harmful for health
smog
A very large ball of burning gas in space that is usually seen from the earth as a point of light in the sky at night
star
One of the independent groups of stars in the universe
galaxy
The fact of a country or city having too many inhabitants for the amount of food, materials, and space available there
overpopulation
A gradual increase in world temperatures caused by gases such as CO2 that are collecting in the air around the earth and stopping heat from escaping into space
global warming / heating
An act of moving around space outside a spacecraft but connected to it
spacewalk
Damage caused to air, water, etc. by harmful substances or waste
pollution
Any of the groups of stars in the sky that seem to form a pattern and are given names
constellations
One of the many large rocks that circle the sun
asteroid
An extremely large round mass of rock and metal or gas that moves in a circular path around the sun or another star
planet
A device sent up into space to travel around the earth, usually for collecting information or communicating
satellite
The activity of travelling into space for pleasure and interest, rather than as a job
space tourism
Gas, coal and oil that were formed underground from plant and animal remains millions of years ago
fossil fules
An unmanned spacecraft designed to explore the solar system and transmit data back to earth
space probe
Clothes that are made and sold cheaply, so that people can buy new clothes often.
fast fashion
The part of space that is very far away from earth
outer space
The curved path through which objects in space move move around a planet or a star
orbit