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Watch NASA's Artemis Orion moon spacecraft blow its top during testing (video)

An uncrewed Orion spacecraft successfully traveled thousands of miles beyond the moon and back, demonstrating its ability to one day transport astronauts to lunar orbit — but there are a few more tests the spacecraft has to ace before setting out on ...

NASA's Hubble and Chandra telescopes discover a strange 'sideways' black hole in a cosmic crime scene (image)

Hubble Space Telescope image of galaxy NGC 5084's core. A dark, vertical line near the center shows the curve of a dusty disk orbiting the core, whose presence suggests a supermassive black hole within. The disk and black hole share the same orientation, ...

Axiom's private space station is coming sooner than we thought

By revising the order in which it will launch the station's modules to Earth orbit, Axiom Space will be able to start operating a free-flying platform as early as 2028, the Houston-based company announced this week.

Giant sloths, mastodons coexisted with humans for millennia in Americas

ABC News

ABC News

SAO PAULO, Brazil -- Sloths weren't always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense claws. For a long time, scientists believed the first ...

SpaceX launching 30 satellites on Bandwagon-2 rideshare mission early Dec. 21

SpaceX plans to launch 30 satellites to orbit early Saturday morning (Dec. 21). A Falcon 9 rocket is scheduled to lift off from California's Vandenberg Space Force Base on Saturday at 6:34 a.m. EDT (1134 GMT; 3:34 a.m. local California time), ...

Smithsonian

The Ten Most Significant Science Stories of 2024

Smithsonian

From a total solar eclipse that captivated our continent to record temperatures that scorched the planet, these were the biggest moments of the year. Science Photo Collage. Stories in a wide variety of scientific disciplines made our list this year.

One of 2024's Last Meteor Showers Is About to Reach Its Peak

The New York Times

The New York Times

Meteors from the Ursids appear near the Little Dipper, which is part of the constellation Ursa Minor. Only skywatchers in the Northern Hemisphere will have a chance of seeing this shower. The moon will be just over half full, making streaks in the sky even ...

Dark energy 'doesn't exist' so can't be pushing 'lumpy' universe apart, physicists say

Their analysis has been published in the journal Monthly Notices of the Royal Astronomical Society Letters. For the past 100 years, physicists have generally assumed that the cosmos is growing equally in all directions. They employed ...

New research says people arrived in Americas much earlier and co-existed with giant sloths and mastodons

PBS NewsHour

PBS NewsHour

SAO PAULO (AP) — Sloths weren't always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense claws. For a long time, scientists believed the first humans to ...

ESA and NASA satellites deliver first joint picture of Greenland Ice Sheet melting

Global warming is causing the Ice Sheet to melt and flow more rapidly, raising sea levels and disturbing weather patterns across our planet. Because of this, precise measurements of its changing shape are of critical importance for tracking and adapting to ...