Expansion of the universe

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

Ten years ago, on 14 September 2015, a new window on the Universe was opened, giving us a novel way of studying exotic, high-energy objects such as black holes and neutron stars: the first direct dete

Astronomers love a challenge. They place their observatories on the highest mountains, in the driest deserts, on the coldest ice shelves, beneath the deepest oceans, in orbit around Earth and the Sun,

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

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

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