Scientists have discovered that dark matter, the universe's most mysterious "stuff," obeys gravity on vast cosmological ...

A mathematical investigation of galactic data suggests elusive dark matter is confined to the rules of gravity.

How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the ...

For years, dark matter has puzzled scientists, lurking in the universe’s vast expanse yet eluding direct detection. This ...