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© 2026 Developments Today. All rights reserved.

Artist's rendition of the birth of twin stars in the HOPS-312 system. Credit - NSF/AUI/NSF NRAO/B. Saxton

Young Binary Stars Appear to Form Through Disk Fragmentation, Not Chaotic Migration

A preprint examined 51 infant binary systems to test how close stellar pairs form.
Researchers used ALMA observations of gas outflows as a proxy for system angular momentum.
The observed alignments strongly favored disk fragmentation over turbulent fragmentation followed by inward migration.

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DT Editorial Team·May 3, 2026·via universetoday.com

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This artist’s impression compares the semi-heavy water content of the interstellar comet 3I/ATLAS (left) and Earth (right). Credit: NSF/AUI/NSF NRAO/M.Weiss

Interstellar comet 3I/ATLAS appears to have formed in a much colder star system than our own

ALMA made the first measurement of deuterated water in an interstellar object.
The chemistry suggests 3I/ATLAS formed in a colder, less irradiated system than the early Solar System.
The observations were made within days of perihelion during a narrow viewing window.

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DT Editorial Team·Apr 24, 2026·via universetoday.com

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This artist's illustration shows the young protostar MC 27 and its protostellar disk in the lower right. The large, 1,000 au ring of gas is shown, along with magnetic field lines penetrating the ring. Image Credit: Y. Nakamura, K. Tokuda et al. 2026. ApJL

ALMA Spots Giant Gas Ring Around a Young Protostar, Offering New Clues to Star Formation

ALMA Band 9 observations revealed a warm gas ring about 1,000 astronomical units across around MC 27.
Researchers link the structure to magnetic flux associated with the protostar’s disk.
The finding may help explain how young stars release excess energy and continue accreting mass.

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DT Editorial Team·Apr 12, 2026·via universetoday.com

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A mid-infrared view of M51 provided by the James Webb Space Telescope's MIRI instrument. Swirls of interstellar gas are being illuminated by massive young newborn stars.Credit: NASA, ESA, CSA, Yoo &amp; Ginsburg (UF). Image processing: A Pagan (STScI)

James Webb opens a clearer view into the hidden star factories of W51

JWST observed the W51 star-forming region about 17,000 light-years from Earth.
The telescope revealed young stars and structures hidden by dust in optical views.
Comparisons with ALMA show that some starbirth activity remains obscured even to JWST.

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DT Editorial Team·Apr 7, 2026·via universetoday.com

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ALMA Captures Largest-Ever Image of Milky Way's Hidden Center

Largest-ever ALMA mosaic spans 650 light-years across the Milky Way's Central Molecular Zone
Reveals intricate network of cold gas filaments channeling material toward star-forming regions
Detected dozens of molecules from silicon monoxide to complex organics like acetone and ethanol
Five papers published in MNRAS, with data publicly released for global research community

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DT Editorial Team·Feb 25, 2026·5 min read·via phys.org

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DT Editorial Team·Feb 21, 2026·7 min read·via space.com

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A grid showing 18 dusty galaxies that look like reddish splotches and golden splotches.

70 Ancient Dusty Galaxies at the Edge of the Universe Could Rewrite Cosmic History

48 astronomers from 14 countries identified 70 dusty galaxies from the universe's first billion years using JWST and ALMA
The galaxies show surprising levels of metals and dust, suggesting multiple generations of stars had already lived and died
They may represent the missing evolutionary link between bright early galaxies and dead quiescent ones
Current cosmological models did not predict this level of chemical enrichment so early in cosmic history
The findings were published in The Astrophysical Journal Letters on February 20, 2026

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