Cluster 4:Exploring the Universe

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.

Temperature is an important part of life on Earth and life in space. This backgrounder explains what temperature is, how it affects people and how it is controlled on the International Space Station.

NASA engineers apply kinematics and dynamics to test parachutes designed specifically to help space probes land safely using aerodynamics.

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

When astronomers search for extraterrestrial life, they often have to listen for radio waves coming from deep space. If you’re interested, you can help!

Litter isn't just a problem on Earth. When litter ends up in space, it can cause collisions and other consequences for satellites, the International Space Station and even for people on Earth!

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.

5 images of scenes showing various sunrises

5 images of scenes showing various sunsets

One of the greatest hazards that humans in space face is cosmic radiation. Learn what cosmic radiation is, why it's dangerous, and ways that we are looking at protecting humans in deep space.

In planetary science, astronomers have found planets that orbit other stars, just like Earth orbits the Sun. Some of them might even be able to support life.

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

This backgrounder explains what noise is, how it is measured, and how it affects our hearing, wellness and more.