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Why can’t humans regenerate limbs? New research offers a clue

Oxygen and hyaluronic acid may play a role in tissue recovery and regeneration, two new studies suggest

Timeline of the Artemis II moon mission’s return to Earth

On Friday, the four astronauts on board the Orion space capsule will begin their final descent to Earth. Here's the plan, including the final, most nail-biting 13 minutes of the journey

Why Manatees Need Humans to Slow Down and Pay Attention

JOHNNY DIAZ

These gentle giants forage in shallow waters, primarily along the coast of Florida, and often have fatal encounters with boats. What can be done to help them?

NASA’s Artemis II moon mission is on track for Friday splashdown

After a hectic eight days in space, the Artemis II crew—and the many NASA personnel supporting their journey—are ready for the mission's final milestone

White House budget puts 54 NASA science missions on the chopping block

Experts found that the White House budget request for the upcoming fiscal year could defund 54 NASA science missions, including a spacecraft currently studying Jupiter and two planned Venus missions

Medieval aurora poetry provided clues to historic solar storms

Medieval poets, including a Japanese noble, provided key descriptions to track down solar events

This sci‑fi twist on Moby-Dick will blow your mind

Alexis Hall reimagines Melville's classic with space whales, AI intrigue and a bold queer twist that launches Moby-Dick into an entirely new sci‑fi universe

Mysterious heart neurons maintain blood pressure to prevent fainting

Researchers pinpointed the purpose of mysterious heart neurons in mice—and humans have them, too

Why bombing Iran's nuclear power plant could cause an environmental disaster

Strikes to Iran's Bushehr nuclear power plant could release long-lasting radioactive cesium 137 into the Persian Gulf, causing environmental calamity and threatening drinking-water supplies for millions

NASA’s Dragonfly mission will send a nuclear-powered flying drone to Titan

NASA plans to launch a wildly ambitious nuclear-powered octocopter to Saturn's largest moon, Titan, in 2028

NASA’s Artemis II crew returns today—here’s what to know ahead of splashdown

After a ten-day mission around the moon, the Artemis II astronauts will have traveled nearly 700,000 miles

New particle mass measurement deepens quantum mystery

A new calculation helps narrow down the mass of the W boson, one of the heaviest fundamental particles in the universe

Watch live—NASA’s Artemis II crew returns to Earth

On Friday these four astronauts and their Orion spacecraft will splash down in the Pacific Ocean after a 10-day mission around the moon

The Expanse authors James S. A. Corey explore alien war in new book The Faith of Beasts

Award winning duo James S. A. Corey show humanity's struggle with staggering alien power in their latest installment of the Captive's War series

NASA’s Artemis II moon mission splashes down

NASA's Orion capsule and the four astronauts on board have made it back to Earth after 10 days in space and a record-breaking mission around the moon and back