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GD-1 stellar stream and Milky Way

Physicists explain a stellar stream’s distinctive features

Spur and gap features seen in Milky Way’s GD-1 stellar stream could be caused by self-interacting dark matter subhalo

By Iqbal Pittalwala | January 6, 2025 | Science / Technology
Dwarf galaxies around the Milky Way

How did a satellite galaxy of the Milky Way come to be?

Crater 2, located approximately 380,000 light years from Earth, is one of the largest satellite galaxies of the Milky Way. Extremely cold and with slow-moving stars, Crater 2 has low surface brightness. How this galaxy originated remains unclear. “Since its discovery in 2016, there have been many attempts to reproduce...

By Iqbal Pittalwala | June 11, 2024 | Science / Technology
JWST-ER1g

Physicists solve puzzle about ancient galaxy found by Webb telescope

UC Riverside study offers an explanation for dark matter distribution in a massive quiescent galaxy

By Iqbal Pittalwala | April 12, 2024 | Science / Technology
Gravitational len system

New dark matter theory explains two puzzles in astrophysics

Dark matter may be more vibrant than previously thought, UC Riverside study reports

By Iqbal Pittalwala | December 6, 2023 | Science / Technology

Why are dark matter halos of ultra-diffuse galaxies so … odd?

A UC Riverside physicist explains

By Iqbal Pittalwala | September 12, 2022 | Science / Technology

How a supermassive black hole originates

UC Riverside-led study points to a seed black hole produced by a dark matter halo collapse

By Iqbal Pittalwala | June 16, 2021 | Science / Technology

A new dimension in the quest to understand dark matter

UC Riverside dark matter research program targets assumptions about particle physics

By Iqbal Pittalwala | June 2, 2021 | Science / Technology

Physicists explain mysterious dark matter deficiency in galaxy pair

A new theory about the nature of dark matter helps explain why a pair of galaxies about 65 million light-years from Earth contains very little of the mysterious matter, according to a study led by a physicist at the University of California, Riverside. Dark matter is nonluminous and cannot be...

By Iqbal Pittalwala | September 9, 2020 | Science / Technology

Satellite galaxies of the Milky Way help test dark matter theory

UC Riverside physicists demonstrate “self-interacting dark matter” model can be tested using astronomical observations of Draco and Fornax

By Iqbal Pittalwala | April 15, 2020 | Science / Technology

In search of dark matter

RIVERSIDE, Calif. — An international team of scientists that includes University of California, Riverside, physicist Hai-Bo Yu has imposed conditions on how dark matter may interact with ordinary matter — constraints that can help identify the elusive dark matter particle and detect it on Earth. Dark matter — nonluminous material...

By Iqbal Pittalwala | July 12, 2018 | Science / Technology
Belltower shot

Teaching the teachers

Weeklong Summer Physics Teacher Academy at UC Riverside serves a large region in Southern California

By Iqbal Pittalwala | June 25, 2018 | University
University of California, Riverside

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Riverside, CA 92521

Tel: (951) 827-1012

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