Science News

The X-ray-emitting binary system Cygnus X-3 features a massive star donating matter to a compact object, probably a black hole. That may explain its perplexing brightness.

Many people are familiar with the sharp pain that can strike beneath your rib cage during exercise. But what causes it?

The unique shape of an ear bone belonging to a Neanderthal child found in a cave in Spain suggests that she had Down syndrome.

Tasselled wobbegong sharks are so well camouflaged they can vanish on the seafloor, waiting for unsuspecting prey to pass before lunging forward to suck their victims into their giant mouths.

Cancer researcher Iñigo San Millán is also a coach to Tadej Pogačar, a favorite to win this year's Tour de France. In this interview, San Millán discusses his work in both arenas.

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered?

Researchers previously thought the calendar ring on the Antikythera mechanism tracked the ancient Egyptian calendar, but new research suggests it tracked the Greek lunar calendar instead.