high redshift
Almost a Third of Early Galaxies Were Already Spirals
In the years before the JWST's launch, astronomers' efforts to understand the early Universe were stymied by a stubborn obstacle:…
The JWST is Re-Writing Astronomy Textbooks
When the James Webb Space Telescope was launched at the end of 2021, we expected stunning images and illuminating scientific…
Can Webb Find the First Stars in the Universe?
The Universe's very first stars had an important job. They formed from the primordial elements created by the Big Bang,…
Why Was it Tricky to Know the Distances to Galaxies JWST Was Seeing?
One of the chief objectives of the James Webb Space Telescope (JWST) is to study the formation and evolution of…
“The Universe Breakers”: Six Galaxies That are Too Big, Too Early
In the first data taken last summer with the Near Infrared Camera (NIRCam) on the new James Webb Space Telescope,…
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…
Wandering Stars Have Been Adrift Between Galaxies for Billions of Years
A new study using Hubble data has revealed that "wandering stars" that inhabit galaxy clusters have been there for billions…