Day 4 of the 2025 Space Telescope Advent Calendar: Hot Stars in the Lobster Nebula
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The fourth day of the 18th annual Space Telescope Advent Calendar features a cluster of powerful infant stars blasting a surrounding cloud of dust.

A dark and dense cloud of dust takes up the left half of the image, with a cluster of glittering white stars at right, all backdropped by many more-distant stars.

NASA, ESA, CSA, STScI, A. Pagan, STScI

Day 4 of the 2025 Space Telescope Advent Calendar: Star Birth in the Lobster Nebula. NASA’s James Webb Space Telescope recently imaged a region where the radiation and winds from a group of superhot infant stars are blasting and sculpting dense clouds of surrounding dust. This brilliant star cluster, called Pismis 24, lies about 5,500 light-years away, near the core of the Lobster Nebula.

See the full advent calendar here, where a new image will be revealed each day until December 25.

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