Get started!

  • Stage 1

    Answer 5 out of 7 questions correctly.

When you look up at the night sky, you can sometimes see the Moon and stars. Everything you see is part of the universe. But the universe contains much more than what you can see!
The universe is the collection of all space; everything is contained within it. It is the largest and oldest thing in existence. The universe is currently estimated to be about 14 billion years old. For comparison, the Sun is about 4.6 billion years old and the Earth is about 4.5 billion years old.
Select the true statements.
ref_doc_title.

Confetti

Jumping to stage 1 of 1

Excellent!

Now entering the Challenge Zone—are you ready?

Teacher tools