Astronomy

The acting administrator of NASA, Sean Duffy, announced a directive to build a powerful nuclear reactor on the moon, but it is unclear what it would power – or even if his plan is legal

The M4.4 solar flare unleashed a coronal mass ejection (CME) into space — and Earth might just receive a glancing blow.

Apple TV+'s absorbing sci-fi series intensifies as our heroes enter the alien mothership starting Aug. 22.

NASA faces historic budget cuts that could shutter missions and stall vital research, prompting a bipartisan outcry from all of the agency’s living former science chiefs.

The caldera may have blasted out its cryomagma in a single explosive event, or it may have spread its eruptions over time.

In its latest postcard from Mars, the European Space Agency’s Mars Express returns to Acheron Fossae: a dramatic network of chasms carved into the surface of the Red Planet.

What are these gigantic blue arcs near the Andromeda Galaxy (M31)?

In about a week the

Taken on July 29 and July 30,

A long time ago in a galaxy 50 million light-years away,

Our Sun frequently erupts in loops.

Why is this nebula so complex?

Just eight sessions of a bespoke form of psychotherapy seems to ease lower back pain even three years later

Just eight sessions of a bespoke form of psychotherapy seems to ease lower back pain even three years later

Technicians have successfully installed two sunshields onto NASA’s Nancy Grace Roman Space Telescope’s inner segment. Along with the observatory’s Solar Array Sun Shield and Deployable Aperture Cover, the panels (together called the Lower Instrument Sun Shade), will play a critical role in keeping Roman’s instruments cool and stable as the mission explores the infrared universe. […]

New research from the University of St Andrews has found that giant free floating planets have the potential to form their own miniature planetary systems without the need for a star.

Earth's history was shaped by the bombardment of icy and rocky bodies. These impacts delivered volatiles and organic compounds to the planet. They also brought water, helping Earth become the life-supporting planets it is today. Could the same thing happen on exoplanets?

Little Red Dots are thought to be young supermassive black holes at the center of early galaxies. That would make them young versions of Active Galactic Nuclei. But Little Red Dots don't emit much x-ray light, and we're starting to learn why.

Astronauts exploring the Moon will need all the help they can get, and scientists have spent lots of time and plenty of money coming up with different systems to do so. Two of the critical needs of any long-term lunar mission are food and oxygen, both of which are expensive to ship to the Moon from Earth. So, a research team from the Technical University of Munich spent some of their time analyzing the effectiveness of using local lunar resources to build a photobioreactor (PBR), the results of which were recently published in a paper in Acta Astronautica.