No two comets are exactly alike.
Of course, they can appear similar. Two decently bright comets that share a superficial resemblance are gracing our skies right now, in fact: C/2025 A6 (Lemmon) and C/2025 R2 (SWAN). They both are on orbits that…

No two comets are exactly alike.
Of course, they can appear similar. Two decently bright comets that share a superficial resemblance are gracing our skies right now, in fact: C/2025 A6 (Lemmon) and C/2025 R2 (SWAN). They both are on orbits that…

In a universe where change usually unfolds over eons, astronomers have gotten a rare front-row seat to watch a small, icy world beyond Saturn build a brand-new set of rings in real time.
A team of Brazil-based astronomers found that the bands of…

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman.
The president of the United States recently claimed that the use of acetaminophen, commonly known by the brand name Tylenol, during pregnancy and early childhood…

Looking for an ultra-advanced adventure smartwatch, but do not want to spend a small fortune on the Garmin Fenix 8? Consider the Garmin Enduro 2 instead. It is just as durable, advanced and rich in features as its more widely known counterpart….

Imagine being able to alter a material so that it seems to transform into an entirely different one. No magic wand or special potion is needed — only light. When light interacts with the material, it excites its magnetic states, setting off…

EDITOR’S NOTE: This CNN Travel series may have adjacent ads by the country it highlights. CNN retains full editorial control over subject matter, reporting and frequency of the articles and videos, in compliance with…

The Orionid meteor shower peaked on the nights of Oct. 21-23, delighting lucky stargazers with a gorgeous natural fireworks display as debris from Halley’s Comet collided with Earth’s atmosphere to create fiery shooting stars in the night…

The century-old mystery of dark matter — the invisible glue thought to hold galaxies together — just got a modern clue.
Scientists say they may be one step closer to confirming the existence of this elusive material, thanks to new simulations…

Materials scientists at Stony Brook University in New York are developing increasingly resilient nuclear reactors designed to conduct fission and fusion reactions even under severe radiation and high temperatures.
According to the journal Nature,…