“Dark Hearts of the Cosmos” –Dazzling New Mergers of Black Holes and Neutron Stars

 

Black Holes in Globular Clusters

 

Gravitational-wave researchers increasingly think that globular clusters, dazzling, celestial “snow globes” –among the oldest objects in the Universe– populated with hundreds of thousands of densely packed stars, harbor dark “hearts” loaded with dozens to even hundreds of black holes–by far the greatest concentration of these exotic objects found anywhere in the universe. Gravitational-wave observations of binary black hole and neutron star mergers by LIGO and Virgo in the past five years have opened a completely new new way of observing the Universe.

(more…)

“The Galaxy Report” –Opt-In for Our Free Weekly Newsletter

Galaxy Report

THe Galaxy Report

Your free twice-weekly fix of  stories of space and science –a random journey from Planet Earth through the Cosmos– that has the capacity to provide clues to our existence and add a much needed cosmic perspective in our Anthropocene epoch.

Yes, Sign Me Up for “The Galaxy Report” Newsletter

“All the Light”– In the History of the Observable Universe

Galaxies in Milky Way

 

From our tiny blue dot, the universe appears inconceivably vast. In the grand cosmic scheme of things, all the light in the observable universe provides about as much illumination as a 60-watt bulb seen from 2.5 miles away, says Marco Ajello, an astrophysicist at Clemson University, who led a team in 2018 that has measured all of the starlight ever produced throughout the history of the observable universe.

(more…)

Planet Earth Report — “Origin of Information Was Like an Extraterrestrial Invasion to ‘Weirdest’ Matter Defies Description”

Planet Earth

 

“Planet Earth Report” provides descriptive links to headline news by leading science journalists about the extraordinary discoveries, technology, people, and events changing our knowledge of Planet Earth and the future of the human species.

(more…)

Unknown Objects in Inner-Most Orbit of Milky Way’s Supermassive Black Hole 

Milky Way Black Hole

 

“It’s mind-boggling to actually witness material orbiting a massive black hole at 30% of the speed of light,” marveled Oliver Pfuhl, a scientist at the Max Planck Institute for Extraterrestrial Physics.

(more…)

Beyond Einstein –“Quantum Gravity Casts Doubt On Fate of Black Holes”

 

LIGO Black Hole

 

 

“The fate of black holes in a quantum theory of gravity is, in my view, the most important problem in theoretical physics,” said Jorge Pullin, the Horace Hearne professor of theoretical physics at LSU.

(more…)