The Satellite That Took This Incredible Photo Almost Didn't Leave Earth

The interstellar comet 3I/Atlas reached its closest point to the sun. Here's how to follow the rest of its journey away from our solar system.

An observatory detected the first radio signal from the interstellar object 3I/Atlas. Here’s what it means.

Solar winds at a million miles an hour and freaky magnetic turbulence are sparking some of the best light shows in centuries.

Driving a spacecraft around a planet isn’t anything like driving on a planet. A physicist explains orbital navigation.

What sneaky invisible forces enable these instruments to locate buried treasure?

By shifting water to a higher elevation, the giant Three Gorges Dam caused the Earth to spin more slowly.

“Anomalous” heat flow, which at first appears to violate the second law of thermodynamics, gives physicists a way to detect quantum entanglement without destroying it.

The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number theory to explain quantum fractals.

The same pulling force that causes “tears” in a glass of wine also shapes embryos. It’s another example of how genes exploit mechanical forces for growth and development.

This $400 set comes with minifigures of the complete Next Gen crew, including Picard, Riker, and Wesley Crusher’s portable tractor beam.

The storm, which is set to make landfall in Jamaica on Tuesday, has stunned meteorologists with its intensity and the speed at which it built.

As mankind was planning the first moon landing in the 1960s, an asteroid approached Earth—and still hasn’t left.