Quantum fluctuations may have caused matter to collapse into black
holes after the big bang.
Not exact matches
Completed in 1980 but operational before then, the VLA was behind the discoveries of water ice on Mercury; the complex region surrounding Sagittarius A *, the black
hole at the core of the Milky Way galaxy; and it helped astronomers identify a distant galaxy already pumping out stars less than a billion years
after the
big bang.
Extragalactic neutrinos come from elementary particles that collided shortly
after the
big bang or crashed into each other while orbiting massive objects like black
holes.
That would be
big enough to see gravitational waves emitted by any merging supermassive black
holes that may have existed around the time when the universe's first stars began to shine, about a hundred million years
after the
big bang.
Big black holes from just after the big bang couldn't have formed the way modern ones do - but they could come from the collapse of the largest stars e
Big black
holes from just
after the
big bang couldn't have formed the way modern ones do - but they could come from the collapse of the largest stars e
big bang couldn't have formed the way modern ones do - but they could come from the collapse of the largest stars ever
A hidden population of black
holes born less than one second
after the
big bang could solve the mystery of dark matter
A gargantuan black
hole has been spotted voraciously devouring material just 770 million years
after the
big bang
Black
holes that might have been created shortly
after the
big bang could constitute the universe's hidden mass, but they would have to exist in such abundance that we would likely have already discovered them through other means.
«This chicken - and - egg problem of what was there first, the galaxy or the black
hole, has been pushed all the way to the edge of the universe,» Yale University astrophysicist Kevin Schawinski said in a June 15 press conference at NASA Headquarters in Washington, D.C. Schawinski was part of a team of researchers that used two renowned orbiting observatories, the Hubble Space Telescope and the Chandra X-Ray Observatory, to identify a population of black
holes in galaxies at redshift 6, which corresponds to a time about 950 million years
after the
big bang.
But recently, a survey has found several quasars — bright cores of galaxies, powered by matter falling into a supermassive black
hole — that existed less than a billion years
after the
big bang.
As we noted, the LHC will not destroy the world and as George Musser wrote to me
after we recorded the interview, «I said something to the effect that scientists had stocked [stoked] concerns about black
holes by saying the LHC would create particles not seen since the
big bang, but those particles have been seen since the
big bang, namely in natural processes such as cosmic ray collisions; therefore if black
holes posed a threat, the universe would already be a goner.»
Just a billion years
after the
big bang, supermassive black
holes as much as 10 billion times the mass of the sun were making their presence felt in the universe.
«If we go back to the very earliest point in our universe, just
after the
big bang, there seems to have always been a strong correlation between black
holes and galaxies.
Here's the problem for those who believe a
big bang preceded the formation of black
holes, stars, and galaxies: black
holes are too small to affect something as huge as a galaxy that formed long
after the universe expanded, and there is no reason a galaxy should form a large central black
hole.