
For Stars, It’s Not Easy Being Green
Stars emit lots of green light, but our eyes don’t let us see them that way

For Stars, It’s Not Easy Being Green
Stars emit lots of green light, but our eyes don’t let us see them that way

‘Little Red Dots’ Spied by JWST May Be Baby Black Holes in Disguise
Puzzling red spots in images from the James Webb Space Telescope are probably young supermassive black holes obscured by dense cocoons of gas


Astronauts Return to Earth in First ISS Medical Evacuation
On Thursday NASA chief Jared Isaacman said the experience of the returned Crew-11 will be used to prepare for future human spaceflight—including to the moon

Astronauts Evacuate the ISS after Medical Incident
The four members of Crew-11 are on their way back to Earth after one of them became unwell with an unknown condition

NASA Commits to Plan to Build a Nuclear Reactor on the Moon by 2030
The U.S. space agency and the Department of Energy will work together to build a fission reactor on the lunar surface in the next four years

Does String Theory Explain the Wiring of the Brain?
Mathematical tools from string theory are giving scientists a new way to study the networking of neurons

The Milky Way’s Central Black Hole May Have Appeared Shockingly Different Just a Few Hundred Years Ago
New research suggests that the x-ray light coming from the Milky Way’s central black hole Sagittarius A* has changed dramatically in the span of just a few hundred years

Sick Astronaut on ISS Forces Early Command Transfer from NASA Crew Member to Russian Cosmonaut
NASA astronaut and ISS leader Mike Fincke transferred station command to a Russian cosmonaut ahead of an unprecedented medical evacuation

Far-Out Exoplanet Breaks a Cardinal Rule of Astronomy
Discovered by volunteer scientists, this alien planet is out of synch with its siblings

NASA Announces Return Date for Evacuating ISS Astronauts
Four ISS crew members are set to touch down on Thursday after NASA announced the first medical evacuation in the space station’s history

NASA Evacuation of ISS Highlights How Astronauts Prepare for Medical Emergencies in Space
NASA crews go through extensive training and have access to supplies to treat medical issues, from dental problems and migraines to heart attacks, while they are in orbit

The Year in the Sky: 2026’s Most Noteworthy Celestial Events
Total eclipses, lunar occultations, planetary conjunctions and meteor showers await stargazers this year