SPACE.COM - A new type of self-interacting dark matter could provide solutions to three very different cosmic puzzles, new research suggests. The first mystery that could be solved involves an ultradense clump of matter detected in the system JVAS B1938+666, which is gravitationally lensed, or visibly distorted, thanks to a quirk of general relativity. The...
MSN - One of the most extensively studied stellar streams within the galactic halo of the Milky Way is the GD-1 stellar stream. It is known for its long, thin structure and distinctive features. It exhibits spur and gap features that have puzzled scientists for many years. A team of researchers led by Hai-Bo Yu...
SPACE.COM - A perplexing "break" in a stream of stars around the Milky Way could be the result of dark matter — that is, if the mysterious cosmic stuff interacts with itself. The feature in question is in the GD-1 stellar stream, a thin group of stars moving together on a shared trajectory through the...
SCI.NEWS - “Since its discovery in 2016, there have been many attempts to reproduce Crater II’s unusual properties, but it has proved very challenging,” said University of California, Riverside’s Professor Hai-Bo Yu. Dark matter makes up 85% of the Universe’s matter, and it can form a spherical structure under the influence of gravity called a...
SPACE.COM - A fresh analysis of a remarkably massive yet compact galaxy from the early universe suggests that dark matter interacts with itself. The galaxy, JWST-ER1, which formed just 3.4 billion years after the Big Bang, was first spotted last October in images snapped by NASA's James Webb Space Telescope (JWST). At over 17 billion...
EARTH.COM - A team of researchers led by Hai-Bo Yu, a professor of physics and astronomy at the University of California, Riverside, has shed new light on the enigmatic nature of dark matter through the lens of an ancient galaxy. The study focuses on JWST-ER1g, a massive ancient galaxy discovered by the James Webb Space...
ASTRONOMY - Maybe dark matter talks to itself, according to a new proposal, and that might just explain two cosmological mysteries at once. Dark matter is the name astronomers give to the mysterious substance that makes up the bulk of all matter in the universe. Upwards of 80 percent of the mass of a galaxy...
The John Templeton Foundation has supported research on a diverse range of subjects including creativity, forgiveness, and free will. Dark matter — nonluminous material in space that is understood to constitute 85 percent of the matter in the universe — can now be added to the list. The foundation has awarded UC Riverside physicist Hai-Bo...
