Unit 1: Space

Discover how space agencies have explored the Red Planet in the past and present and learn about the future of human spaceflight to the red planet.

Learn how soil is different on Mars than on Earth, and what that means for growing plants on the red planet.

Discover some background information on how we'll learn to live and work on the Moon - and beyond!

Learn about the characteristics of the Earth and Mars, two planets in our Solar System.

Learn about how spacecraft have helped us learn about our Solar System.

Learn about the dwarf planets in our Solar System.

Learn about the amazing planets and moons of the outer Solar System.

Astronauts can experience bone loss in space. To understand why, you need to know a bit about how bones are formed and maintained in your body.

Learn why we have seasons in this hands on activity.

Do you weigh the same on Jupiter as you do on Earth? Learn to calculate your weight on a different planet.

Explore the effects of asteroid impacts in this hands on activity.

This backgrounder explains what temperature is, how it is measured, how it affects people, and how it is controlled on the International Space Station.

Earth is covered in rocks. So are Mercury, Venus, Mars and the Moon. Does that mean the rocky planets are all the same?

8 images of different lunar phases showing the portion of the Moon lit by the Sun as the Moon orbits the Earth and as seen by us on Earth