Build a Tinkertoy Christmas tree

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.

A Turning Point USA official inaccurately claimed a high school's math department wore Halloween costumes that mocked Charlie Kirk. Those teachers are now facing a flood of online attacks and death threats.

Save almost $20 on Microsoft's first-party headset for Xbox Series S/X.

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

This week on Uncanny Valley, we break down how one of the most common card shufflers could be altered to cheat, and why that matters—even for those who don’t frequent the poker table.

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

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

Whether for bird-watching or baseball-spotting, we break down prices and specs to find the best pair for you.

A federal contracting database lists an ICE payment for $61,218 with the payment code for “guided missile warheads and explosive components.” But it appears ICE simply entered the wrong code.

“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.

A Trump administration pilot program aims for three nuclear startups to reach a key milestone by July 4, 2026. Valar Atomics says it’s the first to do so—but it had some help.

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