The Space Age framed nuclear propulsion as a quiet rethinking of movement, distance, and endurance beyond Earth.

Our universe plays by certain rules, which originate from different branches of physics. But sometimes the rules seem ...

Humans have always been fascinated with space. We frequently question whether we are alone in the universe. If not, what does ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Time really does move faster on Mars, but the breakthrough that confirms it did not come from a spacecraft’s stopwatch.

Interstellar comet 3I/ATLAS made its closest approach to Earth on Friday, Dec. 19. The comet will pass within about 170 million miles of our planet and poses no danger. While not visible to the naked ...

From Star Wars' hyperspace to Star Trek's warp drive, sci-fi makes interstellar travel look easy. But physics has a stark reality check. This video breaks down why traveling at the speed of light is ...

NASA JPL pinpoints the moment the interstellar visitor passes closest to our planet. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Interstellar ...

A comet from another star system is due to make its closest—and final—approach to Earth this week before it continues on its journey back toward interstellar space. Interstellar Comet 3I/ATLAS will ...

A stray comet from another star swings past Earth this week in one last hurrah before racing back toward interstellar space. Discovered over the summer, the comet known as 3I/Atlas will pass within ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." On one particular Friday night in 1992, Miguel Alcubierre couldn’t stop thinking about Star Trek. Every ...

The Hubble Space Telescope and the Jupiter Icy Moons Explorer have captured fresh images of an interstellar comet as the object nears its closest approach to Earth later this month. Comet 3I/ATLAS has ...