Big Idea: The solar system is part of the Milky Way, which is one of billions of galaxies.

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

In 2019, scientists discovered that our galaxy, the Milky Way, is not the shape they thought it was. How do astronomers use astronomical distance to understand the shapes of galaxies?

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

Humidity is an important part of life on Earth and life in space. This backgrounder explains what humidity is, how it is measured and how it affects us both mentally and physically.

Do you like to look at the stars? What can you identify in the night sky? Try finding some important constellations tonight!

Canadian astronauts Jeremy Hansen and David Saint-Jacques explain how learning to fly an aircraft prepared them for the challenges of living in space.