WASHINGTON—Scientists for the past 15 years have been looking for evidence of a type of star only hypothesized but never observed—one powered not by the fusion of atoms like the sun and other ordinary stars but by mysterious stuff called dark matter. Thanks to the James Webb Space Telescope’s ability to peer back to the…

CAPE CANAVERAL, Fla.—The Webb Space Telescope is marking one year of cosmic photographs with one of its best yet: the dramatic close-up of dozens of stars at the moment of birth. NASA unveiled the latest snapshot Wednesday, revealing 50 baby stars in a cloud complex 390 light-years away. A light-year is nearly 6 trillion miles…

CAPE CANAVERAL, Fla.—Saturn has a fresh new look thanks to NASA’s Webb Space Telescope. The gas giant is dark in the latest photo by Webb, released Friday, but its icy rings are glowing. Webb snapped the picture in the infrared last weekend. At this wavelength, the planet appears dark because sunlight is absorbed by methane…

CAPE CANAVERAL, Fla.—The Webb Space Telescope has captured the rare and fleeting phase of a star on the cusp of death. NASA released the picture Tuesday at the South by Southwest conference in Austin, Texas. The observation was among the first made by Webb following its launch in late 2021. Its infrared eyes observed all…

CAPE CANAVERAL, Fla.—NASA’s Webb Space Telescope is finding bright, early galaxies that until now were hidden from view, including one that may have formed a mere 350 million years after the cosmic-creating Big Bang. Astronomers said Thursday that if the results are verified, this newly discovered throng of stars would beat the most distant galaxy…

NASA’s James Webb Space Telescope, built to give the world a glimpse of the universe as it existed when the first galaxies formed, was launched by rocket early Saturday from South America’s northeastern coast, opening a new era of astronomy. The revolutionary $9 billion infrared telescope, hailed by NASA as the premiere space-science observatory of…

NASA’s James Webb Space Telescope, built to give the world a glimpse of the universe as it existed when the first galaxies formed, was launched by rocket early Saturday from South America’s northeastern coast, opening a new era of astronomy. The revolutionary $9 billion infrared telescope, described by NASA as the premiere space-science observatory of…

MONTREAL—In just over a month, the world’s largest, most advanced telescope will be launched into orbit from a spaceport in South America, and among those eagerly watching will be Montreal physics professor Rene Doyon. The James Webb Space Telescope is scheduled to blast off Dec. 18 aboard the Ariane 5 rocket from the Guiana Space…