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A giant hole in the Universe is devoid of galaxies, stars and even lacks dark matter, astronomers said on Thursday.
The team at the University of Minnesota said the void is nearly a billion light-years across and they have no idea why it is there.
Originally posted by Quantum_Squirrel
Cloaked? a massive black hole? Space made of something we know nothing about?
Originally posted by RedGolem
Well if it is a black hole it would be emitting radiation. So I would think that would have been detected, so should not be a black hole.
In physics, Hawking radiation (also known as Bekenstein-Hawking radiation) is a thermal radiation thought to be emitted by black holes due to "quantum effects". It is named after the British physicist Stephen Hawking who provided the theoretical argument for its existence in 1974, and sometimes also after the Israeli physicist Jacob Bekenstein who predicted that black holes should have thermal properties. Because Hawking radiation allows black holes to lose mass, black holes which lose more matter than they gain through other means are expected to evaporate, shrink, and ultimately vanish. Smaller 'micro' black holes are currently predicted by theory to be larger net emitters of radiation than larger black holes, and to shrink and evaporate faster.
Originally posted by UM_Gazz
Eventually consuming all matter in the universe, compressing it and reaching critical in time exploding into the birth of a new universe?
The repeating big bang, maybe we have been here before millions of times already.
Originally posted by UM_Gazz
The repeating big bang, maybe we have been here before millions of times already.
Interesting submission Quantum_Squirrel.
Flagged.
Illustration of the effect of intervening matter in the cosmos on the cosmic microwave background (CMB). On the right, the CMB is released shortly after the Big Bang, with tiny ripples in temperature due to fluctuations in the early Universe. As this radiation traverses the Universe, filled with a web of galaxies, clusters, superclusters and voids, it experiences slight perturbations. In the direction of the giant newly-discovered void, the WMAP satellite (top left) sees a cold spot, while the VLA (bottom left) sees fewer radio galaxies.
CREDIT: Bill Saxton, NRAO/AUI/NSF, NASA
Originally posted by Quantum_Squirrel
Wiki Hawking radiation page
Originally posted by RedGolem
Well if it is a black hole it would be emitting radiation. So I would think that would have been detected, so should not be a black hole.
forgive me my knowledge is limited on the subject but black holes i thought absouletly nothing escaped its pull not even light , so how can radiation particles escape?
Originally posted by Odessy
reply to post by UM_Gazz
Lol its the "Nothing" from the never ending story! We just have to believe in our imagination and it will go away. make a wish! even two!
Great find as allways OP!
Originally posted by Quantum_Squirrel
forgive me my knowledge is limited on the subject but black holes i thought absouletly nothing escaped its pull not even light , so how can radiation particles escape?
Google Video Link |
Originally posted by lightworker12
I'm pretty sure the radiation from black holes is actually given off by matter about to be sucked in. We have no way of seeing or detecting a black hole beyond gravitational measurements and radiation iirc.
Image left: Many black holes, notorious for pulling matter in, somehow generate particle jets shooting matter away at nearly light speed. Data from the Swift satellite may have solved the mystery of the nature of these jets. Data suggest they are made of electrons and protons."Click image to enlarge. Credit: NASA and the Hubble Heritage Team.