Synchronised Galactic Orbit Challenges Our Best Theory of How the Universe Works

Scientists thought the Milky Way and Andromeda galaxies were unique: They’ve got rings of smaller dwarf galaxies orbiting in what seems to be a synchronised fashion. But when a team of scientists recently looked at another galaxy, they realised it also seemed to shepherd a flock of dwarfs in a strange, synchronised dance. That’s not supposed to happen. Read More >>

What’s the Speed of Dark Matter?

Based on physicists’ measurements, most of the mass in the universe is actually taken up by dark matter. Whatever this stuff is, we can see its effects on the behaviour of distant galaxies, though no experiment has detected it here on Earth. Doing so probably requires knowing how fast it moves. Read More >>

New 3D Map of the Universe Features a Whopping 1.2 Million Galaxies

The astronomical map you see here doesn’t depict stars, it shows galaxies – 1.2 million of them, to be exact, a new record for astronomers. This extraordinary new 3D scan of the universe provides yet more evidence that a mysterious substance known as dark energy is likely causing the universe to expand at an accelerating rate. Read More >>

Stunning First Images From the World’s Most Powerful Digital Camera

Sat on top of a mountain in Chile is the world's most powerful digital camera. Known as the Dark Energy Camera, it's recently been fired up to image the night sky, in an attempt to find the exotic stuff that gets all physicists excited. These are the first images it's produced. Read More >>