As the JWST has probed further and further back in time, however, it has discovered earlier and earlier MQGs. Several of these red and dead galaxies were found as early as 1.2 billion years after ...

Using the James Webb Space Telescope (JWST), astronomers have found the most distant (and thus the earliest) massive "dead" galaxy to date. The discovery suggests that galaxies were "dying" much ...

In another series of papers, he and various collaborators transformed astronomers’ view of what was going on in the space between stars. Image Dr. Ostriker in 2001 with his Princeton colleague ...

Since the beginning of the space age, more than 20,000 have been put into orbit. But the remains of dead satellites are increasingly posing a major threat to those still actively orbiting the Earth.