New Dark Matter Theory May Solve Three Cosmic Puzzles

New Dark Matter Theory May Solve Three Cosmic Puzzles

A study led by University of California Riverside physicist Hai-Bo Yu suggests a new form of dark matter could explain three long-standing astrophysical anomalies. Published in Physical Review Letters, the research shows how dense clumps of self-interacting dark matter may shape structures across galaxies. The findings connect observations from distant gravitational lenses to stellar streams […]

No Dark Matter, astronomers find the long missing Universe’s ordinary matter

No Dark Matter, astronomers find the long missing Universe’s ordinary matter

Astronomers have detected much of the Universe’s ordinary matter, which had long been missing from accounts of its total mass. Not ‘dark matter’ — the mysterious, invisible stuff that makes up the majority of the Universe’s contents. This is normal matter, but it’s spread so sparsely across intergalactic space that more than three-quarters of it […]