Once JWST turned its gaze on the universe, however, it repeatedly smashed Hubble’s record. Scientists are now studying galaxies stretching back to at least 320 million years after the big bang.

Last week, astronomers unveiled exciting new images of planets in the HR 8799 and 51 Eridani star systems — and it was all thanks to a creative use of the James Webb Space Telescope (JWST ...

From the very beginning, JWST was shown to be a revolutionary instrument for the study of exoplanets, detecting intriguing gases and evidence of photochemistry in the atmospheres of distant worlds ...

JWST peered into two distant galaxies, and made measurements of the Hubble constant 2.5 times better than HST could. “Webb’s measurements have dramatically cut the noise in the Cepheid ...

With every passing day, the James Webb Space Telescope (JWST) peers further into the depths of space—and further back in time. Its latest discovery is a galaxy designated JADES-GS-z14-10.

The JWST just scored another first: a detailed molecular and chemical portrait of a distant world’s skies. The telescope’s array of highly sensitive instruments was trained on the atmosphere of a “hot ...

Stars fueled by the self-annihilation of dark matter might have been spotted for the first time by JWST. Skip to main content. Scientific American. July 20, 2023. 5 min read.

JWST’s images leave the Hubble tension untouched. Hints that the measurements might hold up at larger distances arose in a Sept. 12 presentation at a conference in Baltimore dedicated to the ...

Space JWST's dazzling nebula image shows stars we have never seen before. Astronomers have used the James Webb Space Telescope to peer through the filaments of dust and gas in the Tarantula Nebula ...

Long before JWST’s launch, astrophysicists hoped the telescope would help them spot those patterns and find enough of the early universe’s biggest and most active black holes to solve the ...

The JWST has done it again. The powerful space telescope has already revealed the presence of bright galaxies only several hundred million years after the Big Bang. Now, it's sensed light from a ...

The JWST's advantage here is that it exists beyond Earth's atmosphere, about a million miles (1.5 million kilometers) away from our planet in space.