Photo of the Day #653: Red eft

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

“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.

Unusually warm ocean temperatures fueled one of the worst hurricanes on record. New research finds climate change increased the storm’s likelihood.

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.

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.

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.

Which film camera should you get? Which films are the best? We demystify the world of analog photography to help you get started.

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.

Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

The Aedes aegypti mosquito that can carry dengue, yellow fever, and Zika was thought to be too reliant on a hot and wet climate to survive in the Mountain West. But now, a population is thriving in Western Colorado.

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