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Astronomers find the first and only known galaxy without dark matter
Posted on 3/29/18 at 6:46 pm
Posted on 3/29/18 at 6:46 pm
LINK
Stupefied astronomers on Wednesday unveiled the first and only known galaxy without dark matter, the invisible and poorly-understood substance thought to make up a quarter of the Universe.
The discovery could revise or even upend theories of how galaxies are formed, they reported in the journal Nature.
"This is really bizarre," said co-author Roberto Abraham, an astronomer at the University of Toronto.
"For a galaxy this size, it should have 30 times as much dark matter as regular matter," he told AFP by phone. "What we found is that there is no dark matter at all."
"That shouldn't be possible," he added.
There are 200 billion observable galaxies, perhaps more, astronomers estimate.
Some 65 million light-years from Earth, NGC1052-DF2 -- "DF2" for short -- is about the same size as our Milky Way, but has 100 to 1,000 times fewer stars.
Dark matter's existence is inferred from the motion of objects affected by its gravitational pull.
"It is conventionally believed to be an integral part of all galaxies, the glue that holds them together and the underlying scaffolding on which they are built," said co-author Allison Merritt from the Max Planck Institute for Astronomy, in Germany.
The paper: LINK
Stupefied astronomers on Wednesday unveiled the first and only known galaxy without dark matter, the invisible and poorly-understood substance thought to make up a quarter of the Universe.
The discovery could revise or even upend theories of how galaxies are formed, they reported in the journal Nature.
"This is really bizarre," said co-author Roberto Abraham, an astronomer at the University of Toronto.
"For a galaxy this size, it should have 30 times as much dark matter as regular matter," he told AFP by phone. "What we found is that there is no dark matter at all."
"That shouldn't be possible," he added.
There are 200 billion observable galaxies, perhaps more, astronomers estimate.
Some 65 million light-years from Earth, NGC1052-DF2 -- "DF2" for short -- is about the same size as our Milky Way, but has 100 to 1,000 times fewer stars.
Dark matter's existence is inferred from the motion of objects affected by its gravitational pull.
"It is conventionally believed to be an integral part of all galaxies, the glue that holds them together and the underlying scaffolding on which they are built," said co-author Allison Merritt from the Max Planck Institute for Astronomy, in Germany.
The paper: LINK
Posted on 3/29/18 at 6:48 pm to DavidTheGnome
don't tell obama he'll section 8 that bitch
Posted on 3/29/18 at 6:49 pm to DavidTheGnome
quote:
nveiled the first and only known galaxy without dark matter
Iceland or Finland not count?
Posted on 3/29/18 at 6:49 pm to DavidTheGnome
Hawking doing work in the afterlife.
Posted on 3/29/18 at 6:49 pm to DavidTheGnome
Sounds like they found heaven, where there can't be any darkness. Take that atheist.
Posted on 3/29/18 at 6:50 pm to DavidTheGnome
They’re astounded because a place they can only see through powerful telescopes doesn’t have any invisible theoretical stuff in it.
Posted on 3/29/18 at 6:52 pm to DavidTheGnome
Probably find a bunch of Lutherans there.
Posted on 3/29/18 at 6:52 pm to TheHarahanian
quote:
They’re astounded because a place they can only see through powerful telescopes doesn’t have any invisible theoretical stuff in it.
Yep
Posted on 3/29/18 at 6:54 pm to ithad2bme
quote:
Sounds like they found heaven, where there can't be any darkness. Take that atheist.
Posted on 3/29/18 at 6:55 pm to DavidTheGnome
Stephen Hawking has been dead like 5 minutes and already they’re proving him a fraud, what a shocker
Posted on 3/29/18 at 6:56 pm to DavidTheGnome
Well the dark matter does kinda blend in with the background.
Posted on 3/29/18 at 6:58 pm to DavidTheGnome
So, there is more dark matter in the quad than in that galaxy?
Posted on 3/29/18 at 7:01 pm to DavidTheGnome
It's right by that 3rd bright fricker from the left. The need to clean their glasses.
Posted on 3/29/18 at 7:03 pm to DavidTheGnome
I hate to be the one to break it to the writer, but dark matter has yet to be found anywhere in the universe.
Posted on 3/29/18 at 7:10 pm to ksayetiger
quote:thanks to lowered admission standards
So, there is more dark matter in the quad than in that galaxy?
Posted on 3/29/18 at 7:10 pm to DavidTheGnome
quote:
first and only known galaxy without dark matter
Sounds like a racist haven.
Posted on 3/29/18 at 7:16 pm to notsince98
quote:
I hate to be the one to break it to the writer, but dark matter has yet to be found anywhere in the universe.
Yes and no. There is substantial evidence that something with mass that we can’t see exists and makes up the majority of the universe. We don’t know what and it’s invisible aside from it’s effects to any methods we’ve discovered thus far to discover it, thus it’s "dark" matter. They can map where it is though by using gravitational lensing where it’s mass warps spacetime so that it bends light and we are able to see that.
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