Serrations at the edges of a fossilized flipper of the ancient marine reptile Temnodontosaurussuggests it may have been able to swim silently.

A young sunlike star called HOPS 315 seems to host a swirling disk of gas giving rise to minerals that kick-start the planet formation process.

Defense lawyers have called shaken baby syndrome, or abusive head trauma, junk science. But doctors say shaking a baby is dangerous.

For the first time, astronomers have spotted a star that exploded not once, but twice. A new image of a roughly 300-year-old supernova provides visual evidence that some dying stars undergo a double ...