A team of astronomers has, for the first time, "weighed" dark matter haloes surrounding actively feeding supermassive black holes in the bright hearts of ancient galaxies. These black hole-powered ...

An artist's depiction shows how brief, bright bursts of radio waves travel through the fog between galaxies, known as the intergalactic medium. Each wavelength allows astronomers to “weigh” the ...

RIVERSIDE, Calif. -- A top goal in cosmology is to precisely measure the total amount of matter in the universe, a daunting exercise for even the most mathematically proficient. A team led by ...

Ordinary matter – basically, anything other than dark matter – makes up about 15% of all matter. But half of it has long been missing. Powerful bursts of radio waves emanating from 69 locations in the ...

In 1977, the population of Visalia was 35,000; Highway 198 was a stoplight-lined surface street to Mooney Boulevard; there were two high schools, Mount Whitney and Redwood; the Sequoia Mall marked the ...

An illustration of the 14 pairs of binary pulsars used to measure our galactic acceleration. In a new study just published here in early 2021, the orbital periods and changes in the orbital periods of ...

Studying the mysterious form of matter around ancient quasar galaxies could have profound implications for our understanding of how the cosmos evolved. When you purchase through links on our site, we ...

(CNN) — Astronomers have used mysterious fast radio bursts, or millisecond-long bright flashes of radio waves from space, to help them track down some of the missing matter in the universe. But the ...