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.