What came first, dark matter or the Big Bang?

Not much is known about dark matter, but scientists have long-thought that it was the remnant of the birth of the universe

Astronomers baffled by a radio ‘echo’ detected from distant galaxy

13 days after an X-ray emission was detected from a distant galaxy, an almost identical radio signal was detected

By adding these new constraints, astronomers should be able to differentiate between a large planet and a brown dwarf

Scientists have discovered a hungry black hole swallowing a star at the centre of a nearby galaxy

The Mars rover will take advantage of a chance to study some modern Martian activity at mobile sand dunes