In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big ...

Astronomers using the James Webb Space Telescope (JWST) say they have found the strongest evidence yet for an atmosphere ...

"This observation also demonstrates that we can use Webb to find individual stars when the universe was only 5% of its ...

A stronomers using the JWST have traced the source of a long-duration gamma-ray burst back to a supernova that exploded ...

The James Webb Space Telescope's Near Infrared Camera (NIRCam) captured a massive stellar jet in the Sharpless 2-284 (Sh2-284 ...

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier ...

The 13th day of the 18th annual Space Telescope Advent Calendar features part of a dense cluster of galaxies—a wide variety ...

A rocky exoplanet outside the Earth's solar system may have an atmosphere, according to new evidence gathered by NASA ...

The discovery of strange, ultra-red objects—especially the extreme case known as The Cliff—has pushed astronomers to propose an entirely new type of cosmic structure: black hole stars. These exotic ...

Data from the James Webb Space Telescope suggests that exoplanet TOI-561 b is surrounded by a thick atmosphere above a global magma ocean.

The hunt is on for terrestrial exoplanets in habitable zones, and some of the most promising candidates were discovered ...

Searching for exomoons—moons that orbit around another planet—was one of the most exciting capabilities expected of the James ...