Peering back in time, around 12 billion years, astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found the most distant and direct evidence of scorching gas in a forming galaxy cluster, SPT2349-56. The hot plasma, seen when the Universe was just 1.4 billion years old, is far hotter and more pressurized than current theories predicted for such an early system.
Recent News
Cosmic Lens Reveals Hyperactive Cradle of Future Galaxy Cluster
Astronomers using the U.S. National Science Foundation Very Large Array (NSF VLA) and the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered a rare protocluster that was exceptionally bright, all when the Universe was 11 billion years younger. The system, called PJ0846+15 (J0846), is the first strongly lensed protocluster core discovered, revealing how some of the most massive galaxy clusters in the present-day Universe began their lives.
Stars That Die Off the Beaten Path
Astronomers have created a detailed forecast of where they expect to observe future stellar explosions in a nearby galaxy, opening a new window into how exploding stars shape the cosmos.
Unusual stellar nurseries near our galaxy’s center puzzle scientists
These images are made from data from the Stratospheric Observatory for Infrared Astronomy (SOFIA), the Spitzer Space Telescope, and the Herschel Space Observatory. Image credit: J. De Buizer (SETI) / SOFIA / Spitzer / Herschel
New research led by Dr. James De Buizer at the SETI Institute and Dr. Wanggi Lim at IPAC at Caltech revealed surprising results about the rate at which high-mass stars form in the galactic center of the Milky Way. The researchers based their study primarily on observations from NASA’s now-retired SOFIA airborne observatory, and using data from the U.S. National Science Foundation Very Large Array archive, and focuses on three star-forming regions—Sgr B1, Sgr B2, and Sgr C—located at the heart of the galaxy.
This science was presented at the 246th American Astronomical Society Conference in Anchorage, Alaska on Monday, June 9, 2025, 2:15 PM AK. You can read the full release from SETI.
About NRAO
The National Radio Astronomy Observatory (NRAO) is a facility of the U.S. National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.
This news article was originally published on the NRAO website on June 13, 2025.
Recent News
New Discovery Challenges Evolution of Galaxy Clusters
Peering back in time, around 12 billion years, astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found the most distant and direct evidence of scorching gas in a forming galaxy cluster, SPT2349-56. The hot plasma, seen when the Universe was just 1.4 billion years old, is far hotter and more pressurized than current theories predicted for such an early system.
Cosmic Lens Reveals Hyperactive Cradle of Future Galaxy Cluster
Astronomers using the U.S. National Science Foundation Very Large Array (NSF VLA) and the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered a rare protocluster that was exceptionally bright, all when the Universe was 11 billion years younger. The system, called PJ0846+15 (J0846), is the first strongly lensed protocluster core discovered, revealing how some of the most massive galaxy clusters in the present-day Universe began their lives.
Stars That Die Off the Beaten Path
Astronomers have created a detailed forecast of where they expect to observe future stellar explosions in a nearby galaxy, opening a new window into how exploding stars shape the cosmos.