Found: Artifacts From the Future

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.

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

Many critical systems are still being maintained, and the cloud provides some security cover. But experts say that any lapses in protections like patching and monitoring could expose government systems.

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

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

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.

“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.

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

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

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.

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

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