This mash-up of data from the James Webb Space Telescope and the Chandra X-ray Observatory reveals two galaxies mid-collision, with their spiral arms overlapping and bending toward their neighbors' cores.
LIVE Friday, Dec. 19, 2025: Your daily feed of the biggest discoveries and breakthroughs making headlines.
Everyone's favorite interstellar comet, 3I/ATLAS, flew past Earth overnight, coming within about 168 million miles (270 million kilometers) of our planet.
Lava rubble at the bottom of the sea is acting like a giant "sponge" for carbon dioxide, ancient cores reveal.
Scientists made a unique discovery in a cave on the Caribbean island of Hispaniola: dozens of fossilized bee nests inside rodent bones that were deposited by owls thousands of years ago.
Earth from space A 2022 astronaut photo shows a thick blanket of snow covering Yellowstone Lake, transforming the frozen body of water into a featureless white void. But below the ice lie some of Earth's hottest hydrothermal vents.
A thick layer of more than 12 miles of rock may explain why Bermuda seems to float above the surrounding ocean.
Since 1978, China has planted more than 66 billion trees along its 2,800-mile-long northern border, and it wants to plant 34 billion more over the next 25 years to complete its "Great Green Wall."
Five pieces of wood in a silver-and-gold container at a basilica in Rome may be the remains of the manger Jesus was laid on when he was born.
Analysis of latrine sediments at the Roman fort of Vindolanda has revealed that at least three parasites were widespread among Roman soldiers.
Archaeologists have found the earliest DNA evidence to date of a father-daughter pairing.
Pumas in Patagonia, Argentina are eating penguins in a national park — and it's changing how the big cats are interacting with each other.
Warming temperatures appear to be driving genetic mutations in some polar bears to help them survive the shifting climatic conditions.
The genetic link between squids and octopuses may just be found in the vampire squid genome.
Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think.
Cassius was an 18-foot-long saltwater crocodile living in captivity in Marineland Crocodile Park in Australia. He died last year at the age of about 120, and we finally know why.
Buying guides Don't let anyone else choose your next telescope, camera or binoculars — these are important pieces of equipment that you should buy for yourself
Giving immunotherapy earlier in the day can significantly extend patients' survival, compared to giving treatment later in the day, a new study of lung cancer shows.
A man with few risk factors unexpectedly experienced a stroke, and his daily energy drink habit may have been to blame.
Controlling immune cells' internal clocks helped reduce inflammatory damage in conditions like heart attack and sickle cell disease, a mouse study found.
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A new in-wheel motor for electric vehicles can deliver a record-breaking 1,000 horsepower to each wheel.
Chemists used waste cooking oil to create a sustainable, super-sticky adhesive that's strong enough to hold up hundreds of pounds of weight.
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