James Webb Space Telescope

Here's how to watch the events related to the James Webb Space Telescope's arrival.

The James Webb Space Telescope has successfully deployed all five layers of its tennis-court-sized sunshield.

NASA's next big space observatory is finally aloft, but it'll be a while before it starts its highly anticipated science mission.

An international partnership of space agencies just launched JWST, the biggest, most powerful space telescope ever made, in an achievement that was decades in the making.

The $10 billion Webb is considerably bigger and more complex than the Hubble Space Telescope, and it will be going much farther afield as well.

The James Webb Space Telescope, an upgrade to Hubble, is scheduled to launch on Dec. 25.

Humans have gotten good at spotting planets orbiting alien stars. But how many of those alien stars are able to look back and see us?

Alien-life hunters shouldn't focus too narrowly on oxygen when scanning the atmospheres of exoplanets, a new study stresses.

An enormous gas cloud in the early universe has a very small amount of the heavy elements that would form in later stellar generations, suggesting that it was "polluted" by the very first stars.

In the search for life beyond Earth, astronomers should look for signs of pollution in the atmospheres of alien planets outside the Earth's solar system, a new study says.