The 2025 winter solstice happens on Sunday, Dec. 21, bringing the longest night and marking the start of astronomical winter.

But that’s nothing compared with PSR J2322-2650b, an object the mass of Jupiter studied recently by the James Webb Space ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will soon come as close to our planet as it ever will.

Researchers calculated every glacier’s lifespan and found that even at the most ambitious Paris Agreement goal, the planet ...

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

Far beneath Earth’s surface, two enormous structures lie hidden at the edge of the planet’s molten core. These formations, each thousands of kilometers wide, aren’t just geological oddities—they might ...

A billion years ago, days lasted 19 hours: the balance between the oceans, the atmosphere, and the Moon slowed down the Earth ...

Comet 3I/ATLAS, the third interstellar object ever detected, will swing closest to Earth overnight from Thursday to Friday (Dec. 18 to 19). Here’s how to see it.

Space telescopes are typically optimized either to study a small patch of the sky across many wavelengths of light or to ...

Scientists studied thousands of dinosaur footprints in Bolivia and uncovered how these animals moved, ran, and interacted on ...

One side of TOI-561 b is constantly locked towards its star, and the observations showed that this face is very cool for such a closely orbiting planet. A thick atmosphere must be transferring heat ...