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

 

Black Holes in Globular Clusters

 

“Mergers of black holes with neutron stars are exceptionally rare in the Universe.  “An actual merger of a neutron star with a black hole happens, perhaps, once every million years in a galaxy.  To see one in the Milky Way, we would have to watch for a very long time,” Harald Pfeiffer, group leader in the Astrophysical and Cosmological Relativity department at Max Planck Institute for Gravitational Physics (AEI) in Potsdam, Germany, told The Daily Galaxy about recent neutron star-black hole merger of GW200105, detected by LIGO and Virgo in the past five years that have opened a completely new new way of observing the Universe.

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“The ‘Big Bang’ Signal That Shouldn’t Exist”

LIGO Detects "Big Bang" Signal --Ringing the Fabric of Spacetime, Like a Cosmic Bell

 

“Einstein’s gravitational theory, said to be the greatest single achievement of theoretical physics, resulted in beautiful relations connecting gravitational phenomena with the geometry of space,” said the great Caltech physicist Richard Feynman. For all its vast voids, the universe is rippling with ghostly gravitational waves produced by extreme astrophysical phenomena, vibrating the fabric of space-time, like the ringing of a cosmic bell.

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“Before the First Stars” –Primordial Black Holes, Gravity Wells Formed Moments After the Big Bang

Primordial Black Holes

 

Did primordial Black holes –described as “the gates of hell, the end of spacetime, paradoxical, intriguing, frightening” by the Event Horizon Telescope scientists who imaged the now iconic black hole the size of our solar system at the heart of monster elliptical galaxy M87— exist during the cosmic Dark Age following the Big Bang, before the formation of the first stars?

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“Thunderous Chirp” –Signals the Death Spiral Collision of Titanic Black Holes

Colliding Supermassive Black Holes

 

Astronomers have spotted a distant pair of titanic black holes each with a mass more than 800 million times that of our sun headed for a collision in a galaxy roughly 2.5 billion light-years away. The supermassive black holes (inset above) are lit up by warm gas and bright stars that surround the objects. The finding improves estimates of when astronomers will first detect gravitational waves emanating from the black hole pair “a million times louder than those detected by LIGO.”

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“Hubble’s Constant Nailed” –The Universe Past, Present & Future

Hubbles Constant

 

Arguably the most important Cosmological discovery ever made, Hubble’s Constant, is that our universe is expanding. Its stands, observes the Harvard -Smithsonian Center for Astrophysics, along with the Copernican Principle — that there is no preferred place in the universe, and Olbers’ paradox — that the sky is dark at night, as one of the cornerstones of modern cosmology.

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