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By Ashley Strickland, CNN (CNN) — A collision between our Milky Way galaxy and its largest neighbor, the Andromeda galaxy, predicted to occur in about 4.5 billion years, has been anticipated by astronomers since 1912. But new research suggests that the likelihood of this galactic clash, dubbed “Milkomeda,” is smaller than it seems. At first

By Issy Ronald, CNN (CNN) — The world’s glaciers are in dire health with almost 40% of their total mass already doomed, even if global temperatures stopped rising immediately, a new study has found. Researchers estimate glaciers will eventually lose 39% of their mass relative to 2020, a trend that is already irreversible no matter

By Ashley Strickland, CNN (CNN) — Archaeologists in Jerusalem say they have discovered a roughly 2,300-year-old gold ring with a red gemstone that’s remarkably similar to another piece of jewelry found less than a year ago. The two rings, small enough to fit a child, were artifacts unearthed at the City of David site in

By Ashley Strickland, CNN (CNN) — China has launched an ambitious mission to study two intriguing objects in our solar system, the likes of which have never been visited by a spacecraft before. The Tianwen-2 mission launched aboard a Long March 3B rocket from the Xichang Satellite Launch Center in Sichuan province at 1:31 p.m.

By Ashley Strickland, CNN (CNN) — Astronomers have detected an astonishing celestial object emitting bright flashes of radio waves and X-rays that last for two minutes and repeat every 44 minutes. In a fresh twist, the discovery marks the first time powerful X-rays have been associated with an object that might be a long-period transient.

By Ella Nilsen, CNN (CNN) — The Environmental Protection Agency is drafting a proposed regulation that would end all federal limits on planet-warming pollution generated by coal and gas-fired power plants, according to documents cited by the New York Times. The proposed rule, which the agency said would be published once it has completed interagency

By Ashley Strickland, CNN (CNN) — Archaeologists have uncovered a key component of a mysterious artifact at Sutton Hoo, a National Trust site in Suffolk, England, famous for the seventh century Anglo-Saxon “ghost ship” burial discovered in a mound between 1938 and 1939. The fragments of the sixth century Byzantine bucket have fascinated researchers since

By Laura Paddison, CNN (CNN) — Infection-causing fungi responsible for millions of deaths a year will spread significantly to new regions as the planet heats up, new research predicts — and the world is not prepared. Fungi are absolutely everywhere. A vast kingdom of organisms, from mold to mushrooms, they grow in environments such as

By Kameryn Griesser, CNN (CNN) — Astronomers have for the first time spotted two galaxies in the throes of a deep-space “duel.” Using combined observations from ground-based telescopes over nearly four years, the researchers saw the distant galactic neighbors charging toward each other at more than 1.1 million miles per hour (1.8 million kilometers per

By Mindy Weisberger, CNN (CNN) — When a fossil preserves an animal’s complete body in a death pose, seeing it is observing a snapshot in time. Several such fossils exist for Archaeopteryx — the earliest known bird — and now, a remarkable specimen that was off-limits to scientists for decades is offering previously unseen evidence

By Jacopo Prisco, CNN (CNN) — Ten gold bracelets, 17 cigar cases, a powder compact, a comb, and a whopping 598 gold coins: The items are all part of a valuable and somewhat mysterious stash, found by chance by two hikers in the northeastern Czech Republic. The hikers, who wish to remain anonymous, were taking

By Laura Paddison, CNN (CNN) — The world’s ice sheets are on course for runaway melting, leading to multiple feet of sea level rise and “catastrophic” migration away from coastlines, even if the world pulls off the miraculous and keeps global warming to within 1.5 degrees, according to new research. A group of international scientists

By Ella Nilsen, CNN (CNN) — Sometime between today and 200 years from now, scientists say “the big one” will hit the United States. There is danger lurking on the sea floor off the Pacific Northwest’s coast: After centuries of two tectonic plates pushing up against each other, the Cascadia subduction zone that runs from

By Marlowe Starling, CNN (CNN) — At first, behavioral ecologist Zoë Goldsborough thought the small figure seen on the back of a capuchin monkey in her camera trap footage was just a baby capuchin. But something, she said, seemed off. A closer look revealed the figure’s unexpected coloration. She quickly sent a screenshot to her

By Laura Paddison, Rene Marsh, CNN (CNN) — Last summer, an abandoned factory in southwest Memphis got a new life courtesy of the world’s richest man. Elon Musk’s artificial intelligence company xAI moved in to transform this unprepossessing building into the “world’s largest supercomputer.” Musk named it Colossus and said it was the “most powerful

By Ashley Strickland, CNN (CNN) — Archaeologists have uncovered evidence that four people, including a child, in the ancient Roman town of Pompeii used furniture to block a bedroom door and shield themselves from the eruption of Mount Vesuvius in AD 79. Ultimately, the home became their final resting place, according to new research published