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A field of thousands of small galaxies of various shapes and colors on the black background of space — NASA, ESA, CSA, STScI, J. Olmsted, S. Carniani, JADES Collaboration

The Most Distant Known Galaxy

Day 25 of the 2024 Space Telescope Advent Calendar

December 25, 2024

A star cluster is shown inside a large nebula of multicolored gas and dust. The material forms dark ridges and peaks of gas and dust surrounding the cluster, lit on the inner side, while layers of diffuse, translucent clouds blanket them. — ESA / Webb, NASA and CSA, P. Zeidler, E. Sabbi, A. Nota, M. Zamani

An Energetic Stellar Nursery

Day 24 of the 2024 Space Telescope Advent Calendar

December 24, 2024

A bright binary star surrounded by a nebula. The star, in the center, is a large white spot surrounded by a circular glow. The nebula extends far above, below, left, and right of the star in long, arcing shapes made of thin, multicolored filaments. — NASA, ESA, M. Stute, M. Karovska, D. de Martin, and M. Zamani

A Spray of Glowing Filaments

Day 23 of the 2024 Space Telescope Advent Calendar

December 23, 2024

A spiral galaxy seen directly from the side, such that its disc looks like a narrow diagonal band across the image. A band of dark dust covers the disc in the center most of the way out to the ends, and the disc glows around that. — ESA / Hubble & NASA, R. Windhorst, W. Keel

The Edge of a Spiral

Day 22 of the 2024 Space Telescope Advent Calendar

December 22, 2024

Gas, dust, and starlight form a glowing explosion, vaguely shaped like an hourglass lying on its side. — NASA, ESA, STScI / AURA

Inside a Chaotic Nebula

Day 21 of the 2024 Space Telescope Advent Calendar

December 21, 2024

A pair of interacting galaxies, one smaller than the other. They appear as a broad, soft glow in which individual stars aren't visible. A number of bright stars and smaller, background galaxies are also featured—three such galaxies lie in a vertical line below the right-hand galaxy of the pair. — ESA / Hubble & NASA, J. Dalcanton, Dark Energy Survey / DOE / FNAL / NOIRLab / NSF / AURA

A Galactic Chain

Day 20 of the 2024 Space Telescope Advent Calendar

December 20, 2024

A bright young star within a colorful cloud-like nebula. The star is the brightest spot, dominating the right side of the image, surrounded by six large spokes of light that cross the image. — ESA / Webb, NASA & CSA, O. Nayak, M. Meixner

A Beacon in the Clouds

Day 19 of the 2024 Space Telescope Advent Calendar

December 19, 2024

A natural-gas pipeline being laid in Pennsylvania — Robert Nickelsberg / Getty

Gas Will Be the First Big Climate Fight of the Trump Era

The Biden administration just made the case against increasing natural-gas exports.

December 18, 2024

A bright point of light shines near center-right, surrounded by glowing clouds against black space. A blue jet of material extends roughly through the center of the image, partially obscured by the clouds. — NASA, ESA, K. Stapelfeldt, G. Kober

An Energetic Protostar

Day 18 of the 2024 Space Telescope Advent Calendar

December 18, 2024

A dense cluster of many thousands of stars, brightening and becoming more dense toward the center of the image — ESA / Hubble & NASA, F. Niederhofer, L. Girardi

A Gathering of Ancient Stars

Day 17 of the 2024 Space Telescope Advent Calendar

December 17, 2024