I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

Everyone's favorite interstellar comet, 3I/ATLAS, flew past Earth overnight, coming within about 168 million miles (270 million kilometers) of our planet.

Meta's work made headlines and raised a possibility once considered pure fantasy: that AI could soon outperform the world's best mathematicians by cracking math's marquee "unsolvable" problems en ...

Although the Ursids are active from Dec. 13 through Dec. 26, the peak night coincides with the winter solstice, which occurs at 10:03 a.m. EST on Dec. 21. Though the two events are totally unrelated, ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS ...

Lava rubble at the bottom of the sea is acting like a giant "sponge" for carbon dioxide, ancient cores reveal. Ancient lava ...

An excavation at the City of David in Jerusalem unearthed a 1,300-year-old medallion decorated with a seven-branched menorah on each side.

For the first time, scientists have created detailed, 2D maps of the sun's outermost atmosphere. This feat was accomplished ...

Pumas in Patagonia, Argentina are eating penguins in a national park — and it's changing how the big cats are interacting ...

A new study reveals the likely origin of a mysterious spider-like pattern first spotted on Jupiter's moon Europa in 1998. The ...

Decades ago, a spacecraft suggested Saturn's largest moon, Titan, had an ocean. New observations suggest that the liquid may ...

The discovery of a hidden supermassive black hole inside an ancient galaxy suggests that some of our universe's most extreme objects could be invisible unless observed in infrared wavelengths, James ...