Webb Space Telescope deep field

The most ancient galaxies in the universe are coming into view

The James Webb Space Telescope is discovering distant clusters of stars that formed surprisingly early—presenting new mysteries about how the universe evolved.

Using the James Webb Space Telescope, scientists have peered back into the primordial universe and discovered galaxies that existed when the universe was only 300 to 400 million years old. 
Image by NASA, ESA, CSA, M. Zamani (ESA/Webb)
This content is Subscriber-Exclusive
You must have a National Geographic subscription to explore this article.

Unlock this Nat Geo Premium content–and much more

Want to keep exploring? Unlock this exclusive story and more with Nat Geo Premium.
Already a subscriber?
Sign In

Read This Next

What bacteria lurk in your city? Consult the bees.
Is melatonin giving you nightmares?
Why are these orcas killing sharks and removing their livers?

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet