Dark matter

From colliding galaxies to supermassive black holes, we take a look at some of the strangest sights in the universe

What is normal or ‘ordinary’ matter? When astronomers talk about normal matter, we’re referring to baryons. By that, we just mean ‘the stuff of atoms’ – things like protons and neutrons. How did we fi

Amazing answers to your curious questions

A look at some of the thousands of astronomical objects visible in Hubble’s historic photograph

From strange lights in the sky to rocks that spontaneously glide across the ground, the mysteries scientists are trying to finally crack

Get sucked into an astronomical mystery as we get in a spin with the universe’s heaviest objects.