Are roving gas clouds behind dark matter?

When the James Webb Space Telescope (JWST) launched on Christmas Day 2021, astronomers hoped it would revolutionise our understanding of the early stages of the Universe. And they were right. Almost a

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

Did you know? The nearest black hole is ...

Flicking through the pages of BBC Sky at Night Magazine each month, you’d be forgiven for thinking astronomers have black holes pinned down. Whether it’s the dramatic imaging of black hole shadows by

How our knowledge of these worlds beyond the Solar System has exploded in the last three decades

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,