James Webb Space Telescope
JWST Unexpectedly Finds a Small Asteroid During ‘Failed’ Observations
While astronomers and engineers were trying to calibrate one of the James Webb Space Telescope’s instruments last summer, they serendipitously…
Good News! Webb is Fully Operational Again
The James Webb Space Telescope is back to full science operations. One of the telescope’s instruments, the Near Infrared Imager…
Webb NIRISS Instrument has Gone Offline
The JWST is having a problem. One of its instruments, the Near Infrared Imager and Slitless Spectrograph (NIRISS,) has gone…
By Blocking the Light From a Star, Webb Reveals the Dusty Disk Surrounding It
AU Microscopii is a small red dwarf star about 32 light-years away. It's far too dim for the unaided human…
JWST Pioneer Passes Along Advice for Future Space Telescope Builders
After a quarter-century of development, NASA's James Webb Space Telescope is a smashing success. But senior project scientist John Mather,…
The Webb Has Confirmed its First Exoplanet, and it’s the Same Size as Earth.
The James Webb Space Telescope is the most powerful telescope ever launched into space. That power has led to a…
The James Webb Links Modern Green Pea Galaxies to Ancient Galaxies in the Cosmic Dawn
When the James Webb Space Telescope lifted off from Earth on Christmas Day in 2021, it carried a lot of…
Webb Stares Deeply Into the Universe, Showing How Galaxies Assemble
The James Webb Space Telescope is delivering a deluge of images and data to eager scientists and other hungry-minded people.…
JWST Sees Furious Star Formation in a Stellar Nursery
The powerful James Webb Space Telescope is a mighty technological tool. Astrophysicists first conceived it over 20 years ago, and…
Webb Completes its First “Deep Field” With Nine Days of Observing Time. What did it Find?
About 13 billion years ago, the stars in the Universe's earliest galaxies sent photons out into space. Some of those…