James Webb Space Telescope
Latest about James Webb Space Telescope
US Priority Mail stamps now feature James Webb Space Telescope images
By Robert Z. Pearlman published
As light reaching the James Webb Space Telescope, it took between 6,500 and 7,600 years to be received. As images on Priority stamps, they will get your mail to its destination much sooner.
Early galaxies were shaped like surfboards and pool noodles, James Webb Space Telescope finds
By Keith Cooper published
Young galaxies in the early universe adopted elongated shapes as they formed along filaments of the cosmic web, before evolving into more disc-like galaxies.
James Webb Space Telescope catches young planetary system by its dusty 'cat's tail' (photo)
By Robert Lea published
The James Webb Space Telescope has caught the young planetary system Beta Pictoris by the tail seeing a new structure of dust that resembles the lower half of a cat.
James Webb Space Telescope spots hint of mysterious aurora over 'failed star'
By Robert Lea published
The James Webb Space Telescope has spotted signs of a ghostly aurora over a 'failed star,' in the form of infrared emissions from methane in the brown dwarf's atmosphere.
Astronomers solve mystery of 'Green Monster' in famous supernova remnant (photo)
By Sharmila Kuthunur published
The mysterious wispy green light captured by the James Webb Space Telescope last year near the heart of Cassiopeia A turns out to be a result of a blast wave slamming into surrounding material.
12 James Webb Space Telescope findings that changed our understanding of the universe in 2023
By Sharmila Kuthunur published
These are the James Webb Space Telescope's most notable discoveries in 2023.
Warped supernova spotted by James Webb Space Telescope could settle a longstanding debate
By Keith Cooper published
Gravitationally lensed images of two different supernovas in the same galaxy can be used to measure the expansion rate of the universe.
James Webb Space Telescope may have found the oldest black hole in the universe
By Ben Turner published
The James Webb Space Telescope's discovery of the universe's oldest black holes is giving astronomers some vital clues for how they came to be.
James Webb Space Telescope spies record-breaking 'failed star' that shouldn't exist (video)
By Robert Lea published
"We're seeing something new and unexpected."
James Webb Space Telescope's 'Cosmic Christmas Bauble' earns spot in White House Advent Calendar (photo, video)
By Robert Lea published
The powerful space telescope's image of Cassiopeia A shining brightly and silently was revealed as part of the first-ever White House Advent Calendar.
Get the Space.com Newsletter
Breaking space news, the latest updates on rocket launches, skywatching events and more!