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Big Data

Astronomers Reveal Hidden Activity in the Early Universe’s Most Massive Galaxies

January 5, 2026

Spectroscopy at the UC's W. M. Keck Observatory in Hawaii helped the researchers interpret complex data about ultramassive galaxies. Photo courtesy of the W.M. Keck Observatory.

An international team of astronomers has studied ultramassive galaxies - galaxies containing more than 100 billion stars - as they existed when the universe was less than 2 billion years old. The results show that while some of these ultramassive galaxies, or UMGs, had already shut down star...

Professor Noemi Petra in a white shirt and black jacket poses in front of a reflective, opaque glass wall.

Math Professor Receives Prestigious NSF CAREER Award

Professor Noemi Petra is UC Merced’s newest recipient of the National Science Foundation’s Faculty Early Career Development Program (CAREER) award, which the NSF describes as its “...

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