This week, NASA revealed for the first time five pictures taken by the James Webb Space Telescope. Together, these images—from the birth of stars to one of the deepest looks into the far reaches of space—offer some of the most detailed glimpses into the beginnings of our universe ever seen.
Webb’s cameras can look deep into space and far into the past. Webb has the capacity to look 13.6 billion light years distant—which will be the farthest we’ve ever seen into space. This image of the galactic cluster known as SMACS 0723 contains thousands of galaxies, some of which are as far away as 13.1 billion light years. (A single light year is just under 6 trillion miles.) Since light takes a long time to travel so far, we are seeing the galaxies not as they look today, but as they looked 13.1 billion years ago.
https://time.com/6196675/five-james-webb-telescope-images-explained/