Long-term observations of WOH G64 — once considered the most extreme red supergiant star in its galaxy — reveal that the star has undergone a dramatic transition, possibly shedding part of its outer layers as it entered a hotter and rarer stellar phase. An artist’s reconstruction of the red supergiant WOH G64. Image credit: ESO / L. Calçada. Red supergiants are stars more than 8 times...

New measurements show that the DART impact in 2022 not only shortened the orbit of the moonlet Dimorphos around its parent asteroid, Didymos, but also subtly shifted the entire binary system’s path around the Sun. This artist’s illustration shows the ejection of a cloud of debris after NASA’s DART spacecraft collided with the asteroid Dimorphos. Image credit: ESO / M. Kornmesser. When NASA’s...

Ancient DNA from brightly colored feathers found in Peru shows that at least four distinct species of Amazonian parrots — the scarlet macaw (Ara macao), the blue-and-yellow macaw (Ara ararauna), the red-and-green macaw (Ara chloropterus) and mealy amazon (Amazona farinosa) — were transported alive over the Andes centuries before the Inca Empire, evidence of sophisticated long-distance...

Paleontologists analyzing fossils from Ethiopia have described a previously unknown crocodile species that shared the landscape with a hominid species called Australopithecus afarensis. Named Crocodylus lucivenator, the formidable predator may have stalked Australopithecus afarensis at watering holes in the wetlands and woodlands of the Pliocene. Crocodylus lucivenator overlapped with the famed Lucy...

Entomologists in Panama have observed a leaf-masquerading katydid species that begins life bright pink before turning green days later, a shift that may mimic rainforest leaves that flush red or pink before maturing — an adaptive camouflage strategy previously mistaken for a rare genetic anomaly. Intense hot pink morph of an adult female Arota festae photographed on March 27, 2025, on Barro...

Astrophysicists from the University of Illinois and the University of Chicago have developed an innovative method to measure the Hubble constant — the rate at which the Universe is expanding — using the subtle background hum of gravitational waves. As gravitational-wave detectors become more sensitive in the coming years, this approach could reshape our understanding of cosmic history...

In a randomized clinical trial of older adults, researchers found that taking multivitamins for two years modestly slowed epigenetic markers of aging — equivalent to roughly four months less biological aging compared with a placebo. Li et al. evaluated the two-year effect of daily multivitamin-multimineral supplements and cocoa extract (500 mg cocoa flavanols per day, including 80 mg epicatechin)...

In a randomized clinical trial of older adults, researchers found that taking multivitamins for two years modestly slowed epigenetic markers of aging — equivalent to roughly four months less biological aging compared with a placebo. Li et al. evaluated the two-year effect of daily multivitamin-multimineral supplements and cocoa extract (500 mg cocoa flavanols per day, including 80 mg epicatechin)...

New orbital data reveal that the most recently active volcanic systems on Mars weren’t simple one-off blasts into space; instead, long-lived magmatic plumbing beneath Pavonis Mons, one of the Red Planet’s largest volcanoes, reshaped lava flows over time, with distinct eruptive phases and evolving chemical signatures, offering fresh insights into the planet’s inner dynamics and how rocky planets...

In a randomized clinical trial of older adults, researchers found that taking multivitamins for two years modestly slowed epigenetic markers of aging — equivalent to roughly four months less biological aging compared with a placebo. Li et al. evaluated the two-year effect of daily multivitamin-multimineral supplements and cocoa extract (500 mg cocoa flavanols per day, including 80 mg epicatechin)...