The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've ...

There’s a vast trove of Alien lore that goes beyond chestbursters and mother metaphors — though there’s plenty of that too.

Nolan and Villeneuve have both directed some of the 21st Century's most important sci-fi films, but which of them has truly mastered the genre?

The spacecraft will map the boundaries of the heliosphere, study how Earth’s outer atmosphere reacts to solar activity and ...

Interstellar objects like 3I/ATLAS that have been captured in planet-forming disks around young stars could become the seeds of giant planets, bypassing a hurdle that theoretical models have ...

The Interstellar Mapping and Acceleration Probe (IMAP) is being launched later this month to study the outer reaches of the ...

This unexpected color raises new questions about the alien chemistry of comets from beyond our solar system. On Sept. 7 2025, the skies darkened as Earth's shadow consumed the moon. Skywatchers in ...

The slingshot, called TARS, could in theory accelerate a small spacecraft up to 620 miles per second. Reaching interstellar space could be far simpler than we thought, thanks to a new idea called TARS ...

As only the third interstellar object ever discovered, 3I/ATLAS offers a rare chance to study remnants of solar systems beyond our own, briefly bringing the distant galaxy within reach. But before we ...

Two more of NASA's space telescopes recently got another look at comet 3I/ATLAS, a captivating interstellar interloper that first captured the world's attention in July. The object – just the third ...

The Manhattan-sized interstellar object rocketing through Earth’s inner solar system is covered by a cloud of carbon dioxide, a characteristic that shocked experts, according to an analysis of brand ...