Astronomers using W. M. Keck Observatory on Maunakea, Hawaiʻi Island have found compelling evidence of a dark matter-deficient dwarf galaxy, FCC 224. This ultra-diffuse galaxy is located on the ...

Ostriker is responsible for groundbreaking discoveries that forever changed the way astronomers think about what the universe is made of, including the existence of dark matter.

Neutrinos, the mysterious and nearly massless particles that barely interact with anything, are revealing new secrets through the KATRIN experiment. Using tritium decay and advanced spectrometry, ...

Physicist Richard Lieu first explored the idea that gravity could exist without mass—now he’s got a new cosmological model ...

Black holes have always been the divas of the cosmos. They are some of the most powerful and mysterious objects […] ...

Scientists trying to discover the elusive mass of neutrinos, tiny "ghost particles" that could solve some of the universe's ...

Researchers from the University of Waterloo have proposed a new method to measure the Hubble constant that could help resolve ...

Leading this quest is the Dark Energy Spectroscopic Instrument (DESI), a global collaboration involving over 70 institutions.

In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the ...

The universe is vast and mysterious, with over 85% of its mass composed of an invisible substance known as dark matter.

Last month, the Dark Energy Spectroscopic Instrument (DESI) collective reported that dark energy is evolving—specifically weakening—and it could help provide the first observational evidence of string ...