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Comments of the Week #164: From black holes to moons with moons of their own

“There are two types of people who will tell you that you cannot make a difference in this world: those who are afraid to try and those who are afraid you will succeed.” -Ray Goforth ....

A Feild Stsc , Sinisa Lazarek , Observatorio Montcabrer , Michael Kelsey , Ramon Naves , Ray Goforth , Dana Berry Skyworks , Omega Centauri , A Riess Stsc , Wikimedia Commons , Paul Dekous , Richard Jacobs , Mike Hankey , Walt Loveland , Aurore Simonnet , Jennifer Johnson , Hubble Heritage Team Stsc , European Geosciences Union , Tuorla Observatory University Of Turku , Starts With , Future Tech Podcast , Solar System , Milky Way , Classical Physics , Quantum Gravity , With Quantum Gravity ,

Newest LIGO Signal Raises A Huge Question: Do Merging Black Holes Emit Light? (Synopsis)

More like this
. an afterglow in gamma rays and the optical, occurring about 19 hours after-the-fact
I know that 19 hours is like a blink in cosmic terms, but just wondering. if both EM waves and grav. waves propagate at the same speed, why a delay of 19 hours? Given the violent nature of the event.. one would guess that gamma rays where being produced during the merger, at the exact moment of it. but 19 hours after it. maybe not from the event as such but from BH feeding on the material that is nearby?
By Sinisa Lazarek (not verified) on 08 Jun 2017 #permalink ....

Dana Berry Skyworks , Janna Levin , Dana Berry , Skyworks Digital , Gravitational Wave Source , டானா பெர்ரி ஸ்கைவேர்க்ஸ் , ஜன்னா லெவின் , டானா பெர்ரி , ஸ்கைவேர்க்ஸ் டிஜிட்டல் , ஈர்ப்பு அலை மூல ,

Bad Astronomy | Black dwarfs may explode as supernovae in the VERY far future

and a bang. A lot of bangs.
Calculations done by an astrophysicist indicate that in the far future, the Universe will have sextillions of objects called
black dwarfs, and that eventually they can explode like supernovae. In fact, they may represent the very last things the Universe can do.
. So long from now I m having difficulty figuring out how to explain how long it ll be. I ll get to it your brain will be stomped flat by it, I promise but we need to talk a bit first about stars, and nuclear fusion, and matter.
Stars like the Sun release energy as they fuse hydrogen atoms into helium atoms in their cores. It s very much like the way a hydrogen bomb works, but on a massively larger scale; the Sun outputs about the equivalent energy of one hundred billion one-megaton bombs. Every ....

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