James Webb: How a space telescope discovered the galaxy closest to the birth of the Universe

Galaxy JADES-GS-z14-0 discovered in the deepest part of the Universe


Signature, A distant galaxy (in a circle) is visible next to another, but is much further away.

  • Author, Jonathan Amos
  • Role, BBC Science Correspondent

The James Webb Space Telescope has broken its own record by discovering the most distant galaxy ever known.

The star cluster, called JADES-GS-z14-0, was seen as it existed just 290 million years after the Big Bang.

In other words, if the universe is 13 billion years old, that means we are observing a galaxy when the cosmos was only 2% of its current age.

Webb used his huge 6.5-meter-diameter primary mirror and sensitive infrared instruments to make the discovery.

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