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 ...

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 ...

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

In 2004, a bright point of light in the debris disk surrounding Fomalhaut was thought to be an exoplanet. But the spot ...

Our fundamental understanding of Neptune and Uranus may be completely wrong, say researchers rethinking our solar system.

Discovered in archival data, the newly identified exoplanet formed after the dinosaurs went extinct. In a finding that echoes ...

While the 21st century has been bumpy, it has also ushered in monumental scientific and technological breakthroughs that have ...

A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...