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December 20, 2025

Day 20 of the 2025 Space Telescope Advent Calendar: The Cosmic Cliffs

Day 20 of the 2025 Space Telescope Advent Calendar: The Cosmic Cliffs. The James Webb Space Telescope peered inside a region at the edge of a gigantic gaseous cavity within the star cluster NGC 3324. The cluster, about 9,100 light-years away, near the Carina Nebula, is believed to be fairly young, only about 12 million years old.

Day 20 of the 2025 Space Telescope Advent Calendar: The Cosmic Cliffs

TL;DR

  • The James Webb Space Telescope has revealed the 'Cosmic Cliffs'.
  • The image shows a region at the edge of a gaseous cavity within the star cluster NGC 3324.
  • NGC 3324 is about 9,100 light-years away, near the Carina Nebula.
  • The star cluster is estimated to be 12 million years old.
  • This image is part of the 2025 Space Telescope Advent Calendar.

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