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astronomy Articles | Developments Today

Astronomers build a one-stop universe data hub

Multimodal Universe: A Unified Data Hub for Astronomers

MMU standardizes 80+ TB of astronomical data from multiple surveys.
Enables cross-study analysis without supercomputing power.
Led by Center for Astrophysics | Harvard & Smithsonian.
Data includes galaxy images, spectra, and time series.

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DT Editorial Team·Jul 8, 2026·via phys.org

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Andromeda XXXVI (And 36) is shown in red in this image. It's one of many dwarf galaxies found around Andromeda, or M31, in the center of the image. And 36 is about 12.5 billion years old and is about 390,000 light years away from Andromeda. Image Credit: Sakowska et al. 2026. A&amp;A.

New Ultra-Faint Dwarf Galaxy Andromeda XXXVI Discovered Orbiting M31

Andromeda XXXVI is a newly discovered ultra-faint dwarf galaxy orbiting Andromeda.
Only 46 stars have been detected, making it extremely dim and low-mass.
It is about 12.5 billion years old and located 390,000 light-years from M31.
UFDGs are the most dark matter-dominated objects known.

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DT Editorial Team·Jul 6, 2026·via universetoday.com

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Artist’s conception of the view from the surface of the habitable-zone super-Earth exoplanet GJ 3378b. Credit: Nikolai Berman/UC Irvine.

Nearby Super-Earth GJ 3378b May Be More Habitable Than Thought

GJ 3378b is a rocky exoplanet 2.3 times Earth's mass, orbiting a red dwarf 25 light-years away.
Revised analysis places it within the star's habitable zone, where liquid water could exist.
Research led by UC Irvine used the Habitable-zone Planet Finder on the Hobby-Eberly Telescope.
The planet is a prime target for future atmospheric studies with JWST and other telescopes.

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DT Editorial Team·Jul 6, 2026·via universetoday.com

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![The full trail of galaxies, with an inset image of DF9 taken by the Hubble Space Telescope. Credit: Keim et al. (2026)/DECaLS/HST](/article_images/YN_DF9-drak-galaxy_20260630_213201.jpg) *The full trail of galaxies, with an inset image of DF9 taken by the Hubble Space Telescope. Credit: Keim et al. (2026)/DECaLS/HST*

Third dark-matter-free galaxy adds to astronomy puzzle

Astronomers report DF9 as the third known galaxy that appears to lack dark matter.
DF9 sits alongside DF2 and DF4 in a linear structure of seven galaxies about 45 million light-years away.
The galaxy’s estimated mass is consistent with visible matter alone, based on stellar motions.
The finding supports the idea that some galaxies may form through an extreme collision-driven process.

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DT Editorial Team·Jul 1, 2026·via universetoday.com

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This is a 1.7 gigapixel image of stars in the constellation Lupus from the VRO and its LSST Camera. This is the largest digital camera in the world, and with it, the VRO can capture wide images of the sky in extreme detail. The VRO's long-awaited 10-year survey of the sky has now begun. Image Credit: NSF–DOE Vera C. Rubin Observatory/NOIRLab/SLAC/AURA

Vera Rubin Observatory begins decade-long LSST sky survey

The Vera Rubin Observatory has started the 10-year Legacy Survey of Space and Time.
The survey will repeatedly image the southern sky, looking for objects that change brightness, position, or both.
Researchers can receive nightly automated alerts, enabling rapid follow-up observations by other telescopes.

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DT Editorial Team·Jul 1, 2026·via universetoday.com

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Artist's portrayal of a black hole in the Milky Way Galaxy (Credit : Ute Kraus)

Black holes can flare again years after swallowing a star

A team monitored 31 tidal disruption events with the Very Large Array.
Some black holes produced delayed radio flares months or years after the original stellar disruption.
The radio glow likely comes from expelled material colliding with surrounding gas.
Researchers may be able to predict later radio activity from earlier visible-light differences.

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DT Editorial Team·Jun 29, 2026·via universetoday.com

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An artist's conception of the evolution of a galaxy. The process of star formation not only creates new stars, but introduces interesting new effects that eventually shape the galaxies where they live. Credit: Getty Images/OSU

Study Links Young Star Feedback to How Galaxies Change

Researchers studied 18,000 star-forming regions in nearby spiral galaxies using PHANGS survey data.
The work used observations from Hubble, JWST, and ALMA to examine gas, radiation, and galactic structure.
The study suggests pressure from ionized gas around young stars helps drive changes that influence galaxy evolution.

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DT Editorial Team·Jun 29, 2026·via universetoday.com

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An illustration of a glowing sun surrounded by red glowing gas.

New models suggest Earth might avoid the sun’s final engulfment

A new study suggests Earth may not be certain to be engulfed when the sun enters its giant phases.
Researchers describe a balance between inward tidal drag and outward orbital expansion from solar mass loss.
The work was published June 19 in Astronomy & Astrophysics and draws on updated models plus observations of a nearby dying star.

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DT Editorial Team·Jun 28, 2026·via livescience.com

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Polarised emission of the black hole at the heart of M87. The lines mark the orientation of polarisation, which is related to the magnetic field around the shadow of the black hole (Credit : EHT Collaboration)

Black hole merger signal offers a new view of the event horizon

Researchers used the unusually strong gravitational-wave event GW250114 to analyze black hole physics near the event horizon.
The team says it isolated faint “direct waves” that carry information from the final instant before the merger completed.
The analysis reportedly yielded estimates of the remnant black hole’s spin and surface gravity strength.
If replicated, the method could turn future gravitational-wave detections into stronger tests of gravity in extreme conditions.

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DT Editorial Team·Jun 28, 2026·via universetoday.com

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RAD-BAARG radio galaxy, with the 144 MHz radio image from the LOFAR radio telescope shown in red and the optical image from the BASS survey shown in RGB colour (Credit
Hota et al. (2026) and the RAD@home Collaboratory)

Astronomers Spot a Giant Bow Shock Around a Fast-Moving Galaxy

RAD-BAARG appears to show a giant bow shock nearly 1.8 million light years across.
Researchers think the galaxy is moving through cluster gas faster than sound travels in that medium.
Its distorted jets and arc-like radio emission make it unlike typical symmetric radio galaxies.
The object was identified through the LOFAR Two-metre Sky Survey, which is sensitive to faint radio structures.

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DT Editorial Team·Jun 26, 2026·via universetoday.com

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MXDFz4.4 has helped a team of astronomers to understand a little more about the evolution of the universe (Credit : NASA)

Hubble Spots Early Galaxy That May Have Helped Clear Cosmic Fog

Astronomers detected ionising light from galaxy MXDFz4.4 as it appeared 1.4 billion years after the big bang.
The observation pushes earlier the known frontier for galaxies seen leaking radiation that can ionise hydrogen.
Researchers describe the galaxy as much smaller than the Milky Way but forming stars far faster.
Hubble, JWST and the Very Large Telescope were used together to identify and characterize the object.

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DT Editorial Team·Jun 26, 2026·via universetoday.com

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Image of KSP-OT-202104a in a quiescent phase image made by stacking 549 x 60s exposures (Credit : Sang Chul Kim et al)

Astronomers Spot a Dwarf Nova Orbiting Below a Long-Standing Limit

Astronomers identified KSP-OT-202104a, a dwarf nova with a 72-minute orbit.
The system sits below the roughly 76-minute period minimum long used for dwarf novae.
Only ten such systems are known, and this team found two of them.
The companion star’s composition or evolutionary state may explain the unusually tight orbit.

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DT Editorial Team·Jun 25, 2026·via universetoday.com

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The path of a planet as it spirals into its star. The result is that the event tears the planet apart and sucks its elements into the star. Image credit: NASA, ESA, CSA, Ralf Crawford (STScI)

Astronomers report evidence a star consumed one of its planets

Researchers say unusual lithium levels in TOI-5882 suggest the star absorbed a planet.
A brown dwarf companion in the system may have destabilized the planet's orbit and sent it inward.
The finding highlights how astronomers use stellar spectra to reconstruct violent events in planetary systems.

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DT Editorial Team·Jun 25, 2026·via universetoday.com

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First ever image of a black hole, taken by the Event Horizon Telescope. Credit - EHT Collaboration

Solar Gravitational Lens Study Expands Targets Beyond Exoplanets

A new arXiv preprint says the Solar Gravitational Lens could study bright compact objects, not just exoplanets.
The paper highlights white dwarfs and black holes as targets less constrained by photon starvation.
Broadening the target list could strengthen the scientific case for a future SGL mission.

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DT Editorial Team·Jun 23, 2026·via universetoday.com

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Astronomers at MIT and elsewhere have detected a quasar flickering from the very early universe. This artist’s concept illustrates a quasar accretion disk and a jet of superheated material streaming out to space. Credit: NASA/JPL-Caltech

Earliest flickering quasar yet seen challenges early black hole theories

Astronomers detected flickering from quasar J0439+1634 in the early universe.
The quasar is seen as it existed about 850 million years after the Big Bang.
Its variability suggests a flat accretion disk, unusual for such an early epoch.
The finding complicates theories of how supermassive black holes formed so quickly.

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DT Editorial Team·Jun 23, 2026·via universetoday.com

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Image of the Gamma Ray Sky according to the Fermi Large Area Telescope. Credit - NASA/DOE/Fermi LAT Collaboration

Gamma-Ray Background Study Tightens the Case Against Asteroid-Mass Primordial Black Holes

Researchers modeled the gamma-ray signature expected from asteroid-mass primordial black holes.
The analysis compares that prediction with the diffuse extragalactic gamma-ray background.
The reported result narrows the case for this mass range as a dark matter candidate.

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DT Editorial Team·Jun 22, 2026·via universetoday.com

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An illustration of the galaxy system CRISTAL-02, with an outflow of gas almost as large as the system itself, suggesting that star-forming gas is streaming away.

JWST spots an early-universe outflow that may shut galaxies down

JWST and ALMA observed CRISTAL-02 as it appeared 1 billion years after the Big Bang.
Researchers reported a gas plume nearly as large as the galaxy system itself escaping at high speed.
The finding supports the idea that merger-driven winds can quench star formation in early galaxies.

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DT Editorial Team·Jun 22, 2026·via livescience.com

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Artist's illustration of 55 Cnc e. (Credit: NASA)

JWST suggests 55 Cancri e has a hydrogen-rich, changing atmosphere

JWST observed five eclipses of 55 Cancri e, a super-Earth 41 light-years away.
Researchers say the planet likely has a hydrogen-rich atmosphere with large amounts of carbon monoxide.
Variation across the observations could point to active outgassing and temporary cloud formation.

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DT Editorial Team·Jun 17, 2026·via universetoday.com

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NASA’s Webb Catches Exoplanet Getting Roasted

Webb tracks a giant exoplanet as it heats up in real time

NASA says Webb observed HD 80606 b heating dramatically during a close pass by its star.
The exoplanet’s temperature rises by about 1,100 degrees Fahrenheit.
Researchers are using the system to study fast atmospheric changes on a hot Jupiter.

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DT Editorial Team·Jun 17, 2026·via science.nasa.gov

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Artist's impression of 'Oumuamua, our first known interstellar visitor. Credit - NASA, ESA, and J. Olmsted and F. Summers (STScI)

A Study Says We’ve Barely Searched for Alien Probes

The paper asks whether physical extraterrestrial technosignatures could be present in the Solar System today.
Humanity has already sent five spacecraft onto escape trajectories out of the Solar System.
The study uses a four-part framework covering active and passive artifacts in space and on surfaces.
Its conclusion is that current technology is insufficient to rule the idea out.

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DT Editorial Team·Jun 16, 2026·via universetoday.com

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