These glowing arcs of radio energy are known as "radio relics," faint clouds resulting from powerful shockwaves surging ...

Astronomers have spotted something that appears to stretch around ten billion light years across. This so-called ...

"Cosmologists calculate the current theoretical size limit of structures to be 1.2 billion light-years, yet both of these structures are much larger – the Giant Arc is almost three times bigger and ...

If dark energy is weakening, as suggested by recent results, then the cosmos is far stranger than most physicists had ...

Have you ever had an X-ray taken of your bones? Well, so has the Milky Way. NASA's Chandra X-ray Observatory regularly images ...

Using the Subaru Telescope at Maunakea, Hawaii, the team discovered a “Dark Matter bridge” connecting Perseus to a subcluster ...

A new space telescope is mapping the sky in 102 colors — and it may just rewrite our understanding of the universe.

There’s a new class of cosmic object in town. And it might just overturn our understanding of black holes and galaxy ...

“We were able to show that any movement of ordinary matter, such as gas within the large-scale structure of the universe, will not be sufficient to explain the smaller value of the clumpiness ...

The most recent measurement of a nearby galaxy cluster is deepening a disagreement about how fast the universe is expanding — ...