Marcello Hernández recalled a "Saturday Night Live" sketch about aliens he thought was a home run but got crickets when ...

While imperceptible to humans, these tiny delays are significant for experiments that rely on pulsars as ultra-precise cosmic ...

On Earth, deep-sea vents may have given rise to the planet’s first life. But nothing of the sort seems to be happening at the ...

Astronomers are using China's powerful FAST radio telescope to chase after 100 intriguing signals detected by the SETI@home ...

Neptune, Calif., the fictional coastal hometown of Kristen Bell's teen detective, is back on our radar. Veronica Mars is now ...

New photos show off NASA's newly constructed Roman Space Telescope, which will soon help researchers unravel the mysteries of ...

Under extreme planetary conditions, water turns into a strange, electricity-conducting solid hidden deep inside giant planets.

Scientists have discovered more than 6,000 planets beyond our solar system. What if some of them aren't planets at all, but ...

Planets larger than Earth but smaller than Neptune – so called sub-Neptunes – are the most common type of known exoplanet. It ...

Thousands of people hit the streets across the country this weekend to protest ICE and memorialize the people that have been ...