The Universe quiz

Most scientists agree with a theory about the way the Universe began. What is this theory called?

• The great expansion theory

• The big bang theory

• The end of the dinosaurs

How long ago do scientists think the Universe began?

• 9 million years ago

• 18 billion years ago

• 13.8 billion years ago

There are hundreds of billions of stars in our galaxy alone. What are stars?

• Celestial bodies made mostly of hydrogen and helium that give out light and heat.

• Other planets

• Rocky satellites made of graphite and diamond.

What are comets made of?

• Rock and metal

• Rock and gas

• Rock, dust and ice

A light year is a measure of distance. How far is it?

• 9 trillion kilometres

• 36.5 million kilometres

• 365 kilometres

What is the name given to the largest types of stars in space?

• Red dwarfs

• Supergiants

• Red giants

What is the Sun?

• A planet

• A moon

• A star

• An asteroid

Which planet is known as the "Red Planet"?

• Venus

• Mars

• Jupiter

• Mercury

What is the largest planet in our solar system?

• Mars

• Jupiter

• Saturn

• Earth

How long does it take the Earth to orbit the Sun?

• 1 day

• 1000 days

• 365 days

• 30 days