We've been so engrossed in coverage of 3I/ATLAS that we nearly failed to note another comet currently in Earth's skies. This ...

A team of astrophysicists has unveiled how colossal stars thousands of times more massive than the Sun shaped the earliest ...

Scientists have spotted the brightest flare yet from a supermassive black hole that shines with the light of 10 trillion suns ...

The James Webb Space Telescope's Near-Infrared Camera (NIRCam) reveals a stunning view of star-forming region Sagittarius C ...

A giant star that is still being consumed by a supermassive black hole may have caused the largest flare of its kind ever seen, astronomers say.

The enormous outburst was likely caused by an unfortunate star venturing too close to a supermassive black hole ...

The new report comes as many world leaders prepare for the U.N.'s COP30 climate summit in Brazil next week — for reference ...

A peculiar object discovered by the James Webb Space Telescope just 700 million years after the Big Bang could reveal the ...

A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at ...

Images of black holes are more than just fascinating visuals: they could serve as a “testing ground” for alternative theories of gravity in the ...

Researchers are using black hole “shadow” images to test whether Einstein’s relativity remains unshakable. With ...