Learn about the size, temperature, and colour of each planet, and discover why Pluto is no longer considered a planet.

If we could go back 101 years, we would encounter a time when scientists still thought the Milky Way was the entirety of our ...

the Andromeda Galaxy will collide with the Milky Way, resulting in a spectacular cosmic collision! Don’t worry, though – the distances between stars are vast, so we won’t feel a thing.

That's the Andromeda galaxy, our closest galactic neighbor, and in 4 billion years, it will collide with the Milky Way, throwing our solar system away from our own galactic core and reshaping the ...

We’re just coming up on August’s “Milky Way” window, arguably the best 10 days of the year for viewing our galaxy. So clear your diary this weekend and get outside to as dark a site as ...