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X-ray data gathered by the Chandra telescope from the center of M31, highlighting the four nuclear sources — S1, SSS, N1, and P2. P2 corresponds to the position of the supermassive black hole at the center of the Andromeda galaxy.

When a Black Hole Winks at You

Three spectra taken by the JWST/NIRSpec superimposed on an image taken by the JWST/NIRCam, two instruments on board the James Webb Space Telescope. The record galaxy is shown in the middle. It appears in red in the image and its spectrum decreases towards the left (short wavelengths). For comparison, the spectra at the top and bottom, in blue and violet, show typical star-forming galaxies at a similar time in cosmic history.

Galaxies die earlier than expected

The image columns show the change of Uranus for the four years that STIS observed Uranus across a 20-year period. Over that span of time, the researchers watched the seasons of Uranus as the south polar region darkened going into winter shadow while the north polar region brightened as northern summer approaches.

20-Year Hubble Study of Uranus Yields New Atmospheric Insights

Artist’s impression of supermassive black holes (Courtesy of NOIRLab/NSF/AURA/J. daSilva/M. Zamani)

Black Holes: Cosmic Gardeners That Might Actually Nurture Life

galaxy JADES-GS-z14-0

Oxygen Found in Universe’s Most Distant Galaxy Rewrites Stellar Timeline

This is part of a new image that shows the vibration directions, or polarization, of the radiation. The zoom-in on the right is 10 degrees high. Polarized light vibrates in a particular direction; blue shows where the surrounding light’s vibration directions are angled towards it, like spokes on a bicycle; orange shows places where the vibration directions circle around it. This new information reveals the motion of the ancient gases in the universe when it was less than half a million years old, pulled by the force of gravity in the first step toward forming galaxies. The red band comes from our closer-by Milky Way.

Telescope Captures Clearest Images of Universe’s Infancy

The LSST Camera installed on the Simonyi Survey Telescope at NSF–DOE Vera C. Rubin Observatory in March 2025.

World’s Largest Digital Eye Mounted on Chilean Mountain

Ohio State astronomy professor awarded Henry Draper Medal

All 74 exocomet belts as imaged in this study.

Astronomers Map Ice Reservoirs Around 74 Nearby Stars in Landmark Survey

The WASP-132 system contains a Hot Jupiter (in the foreground), an inner super-Earth (here transiting in front of the orange host star) and the planet WASP-132d, discovered towards the outside of the system.

Hot Jupiters Don’t Always Destroy Their Neighbors

On December 24th, AES Andes, a subsidiary of the US power company AES Corporation, submitted a project for a massive industrial complex for environmental impact assessment. This complex threatens the pristine skies above ESO’s Paranal Observatory in Chile’s Atacama Desert, the darkest and clearest of any astronomical observatory in the world [1]. The industrial megaproject is planned to be located just 5 to 11 kilometres from telescopes at Paranal, which would cause irreparable damage to astronomical observations, in particular due to light pollution emitted throughout the project’s operational life. Relocating the complex would save one of Earth's last truly pristine dark skies.

World’s Darkest Observatory Under Threat from Massive Industrial Development

The massive, yet invisible halo of dark matter of a galaxy cluster works as a "macrolens,", while lone, unbound stars drifting through the cluster act as additional "microlenses, multiplying the factor of magnification.

Webb Telescope Discovers Over 40 Ancient Stars in Distant “Dragon Arc” Galaxy

Artist’s Impression of Fastest-feeding Black Hole in the Early Universe

Astronomers Discover Unprecedented ‘Feasting’ Black Hole in Early Universe

Hubble and Webb Observations of Vega Circumstellar Debris Disk. [left]-A Hubble Space Telescope false-color view of a 100-billion-mile-wide disk of dust around the summer star Vega. Hubble detects reflected light from dust that is the size of smoke particles largely in a halo on the periphery of the disk. The disk is very smooth, with no evidence of embedded large planets. The black spot at the center blocks out the bright glow of the hot young star. [right]-The James Webb Space Telescope resolves the glow of warm dust in a disk halo, at 23 billion miles out. The outer disk (analogous to the solar system’s Kuiper Belt) extends from 7 billion miles to 15 billion miles. The inner disk extends from the inner edge of the outer disk down to close proximity to the star. There is a notable dip in surface brightness of the inner disk from approximately 3.7 to 7.2 billion miles. The black spot at the center is due to lack of data from saturation.

Hubble and Webb Reveal Mysteriously Smooth Disk Around Bright Star Vega

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