This image contains a horse which you need to spot within 15 seconds of viewing time. The problem presents itself as a ...

Most people never think about where satellites sit once they reach space. They simply assume they stay put, doing their job ...

Some problems grow quietly, almost politely, until they stop being ignorable. Space junk is one of those. It does not ...

Learn about the Quadrantid meteor shower, its peak time, origin and how to watch one of the first major sky events of the year in early January.

Lavishly illustrated postcard-sized paper labels pasted on mill-manufactured cloth reflected and even subverted ideas of ...

Astronomers analyzing the interstellar object known as 3I/ATLAS say new trajectory and composition data point to an origin ...

Using a newly devised technology, scientists can move small objects without touching them, meaning we're one step closer to ...

KEY OBSERVATIONS The first alert came quietly. The data did not look wrong—just unfamiliar. What followed has forced ...

Classical physics suggests that objects move along a single, well-defined path. Quantum mechanics says something far stranger ...

Turn your walk into a better workout, build strength without weights and more exercise advice for the year ahead.

Astronomers discovered a comet originating from outside the solar system this summer. Its name is 3I/ATLAS ("three-eye-Atlas"), which means it's the third interstellar object found in the solar system ...

A simple explanation of dark matter and antimatter, how they differ, how scientists study them, and why both are important to understanding the universe.