Astronomical Distance

Astronauts from the Apollo Mission landing on the moon.

Let's Talk Lunar Resources

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

Astronauts Anne McClain and David Saint-Jacques

Space Videos

Milky Way galaxy as seen from Australia (Brett Ritchie via Unsplash)

The Milky Way

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?

An artist’s impression of a habitable exoplanet orbiting a red dwarf star

Searching for exoplanets around the star next door

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.