Mercury will be retrograde three times in 2026: Mercury retrograde in Pisces: February 25 at 10:48 pm PT/February 26 at 1:48 ...

Early risers across North America and Europe may spot a bright, silent light gliding across the Christmas sky — and it just ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Starlight and stardust are not enough to drive the powerful winds of giant stars, transporting the building blocks of life ...

Venturing past Jupiter is a generational challenge. This video explores the extreme frontiers of human spaceflight, where ...

The colliding objects are at least 37 miles across — at least four times larger than the object that collided with Earth 66 ...

Neptune’s supersonic winds and icy storms revealed a planet so extreme that it forever changed our picture of the solar system. The discovery of Neptune in 1846 was not just the triumph of mathematics ...

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 ...

The interstellar comet 3I/ATLAS safely passed Earth this morning as it continues its brief trip through our solar system.

Young star systems are a place of violent collisions. Rocks, comets, asteroids and larger objects carom off one another and ...

Young star systems are a place of violent collisions. Rocks, comets, asteroids and larger objects bounce off one another and ...

Scientists atop Mauna Kea on the Island of Hawai’i and across the Hawaiian chain are turning their telescopes skyward Friday ...