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Newfound rocks on Mars suggest the planet may have once sported an oxygen-rich atmosphere, making it more Earth-like and hospitable to life than previously thought.

The excavations have recovered weapons, necklaces, bracelets and worked bones.

A new study debunks previous findings that the dinosaur's intelligence was similar to that of primates, finding instead that they're about as smart as modern-day crocodiles.

The Infra-Red Calibration Balloon (S73-7) satellite had gone off the grid from radar not once but twice — once in the 1970s and then again in the 1990s. After 25 years missing in orbit, it has finally been rediscovered.

Is Stonehenge aligned with the moon? Scientists hope to find out during a rare 'major lunar standstill, which happens once every 18.6 years.

Researchers have discovered a way to curve data-carrying terahertz signals around obstacles, paving the way for ultrafast 6G.

The Batagay megaslump — a 3,250-foot-wide (990 meters) depression in the permafrost in the Russian Far East — is "actively growing" by a massive amount every year, scientists have found.

We've seen many big hitters capture our imagination, alongside a handful of oddities and misfits that were less successful.

The simple question of "why five" has puzzled scientists from multiple fields, and the answer still isn't entirely clear.

A puzzling arc was spotted in the water of a Greenland fjord littered with iceberg fragments. There are a couple of possible explanations for this bizarre phenomenon but we will likely never know what caused it, experts say.

In a new series of comics, where young, female scientists take center stage, MIT's Ritu Raman explains how the format can inspire the next generation of young people into the world of STEM.

Coronal moss grows, solar rain falls and plasma eruptions rear their gargantuan heads in this fiery landscape of the sun's outer atmosphere, taken by ESA's Solar Orbiter.

Sometimes bacteria lurking in people's guts can get them drunk, even if they don't consume any alcohol.

And like dogs, why do cats also sniff fellow felines' behinds?

Your running speed partly comes down to factors you can't control, like genetics, and partly relies on your training.

How can we truly know if AI is sentient? We do not yet fully understand the nature of human consciousness, so we cannot discount the possibility that today's AI is indeed sentient — and that we are mistreating it to potentially grave…

Hammer-headed bats are named after the males' oversized boxy heads, which evolved to amplify and project the honking sounds they produce to impress females during courtship displays.

The research combined radiocarbon dating with measurements of atmospheric radiocarbon from tree rings to build a chronology of the ancient city.

Cats are masters of contortion — and the laws of physics — which helps them stick the landing more times than not.

China's launched its Chang'e 6 sample-return mission, which will haul dirt and rocks home from the mysterious lunar far side.

A 3,500-year-old rest house in the Sinai desert may have been used by an Egyptian pharaoh.

The languages of the earliest Americans evolved in 4 waves, according to one expert.

Health officials have warned of an ongoing tuberculosis outbreak in Long Beach, California.

Infections can trigger pregnancy complications, and now, new miniature versions of the placenta are helping show why.

The Maud Rise polynya has been sporadically opening up in Antarctica's ice since at least the 1970s. Now climatologists finally know why.

New James Webb Space Telescope observations of the exoplanet WASP-43b reveal that the hot gas giant is tidally locked, meaning one side permanently faces its sun while the other always stares out into space.

The wreck near a beach on Mallorca gives a snapshot of sea trade in late Roman times.

Flaring stars, black hole outbursts and gamma-rays are just some of the cosmic exotica that Einstein Probe will hunt for.

The Cave of Crystals in Chihuahua, Mexico, is buried almost 1,000 feet (300 meters) beneath Earth's surface and contains giant gypsum crystal beams that are up to 37 feet (11 m) long.

Mercury is about to reach its "greatest elongation west" of the sun, meaning stargazers will have their best view of the "swift planet" all year. Here's how to see it.