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The Mystery of Phantom Galaxies May Soon Be Solved

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  The Mystery of Phantom Galaxies May Soon Be Solved Sam Wormley <swormley1@gmail.com> - 2016-04-22 16:42 -0500
    Re: The Mystery of Phantom Galaxies May Soon Be Solved Double-A <double-a3@hush.com> - 2016-04-22 14:56 -0700
      Re: The Mystery of Phantom Galaxies May Soon Be Solved Sam Wormley <swormley1@gmail.com> - 2016-04-22 17:40 -0500
        Re: The Mystery of Phantom Galaxies May Soon Be Solved jimp@specsol.spam.sux.com - 2016-04-22 22:52 +0000
    Re: The Mystery of Phantom Galaxies May Soon Be Solved jimp@specsol.spam.sux.com - 2016-04-22 22:44 +0000
      Re: The Mystery of Phantom Galaxies May Soon Be Solved john <johnsefton288@gmail.com> - 2016-04-22 16:01 -0700
    Re: The Mystery of Phantom Galaxies May Soon Be Solved "nuny@bid.nes" <Alien8752@gmail.com> - 2016-04-22 17:58 -0700

#572521 — The Mystery of Phantom Galaxies May Soon Be Solved

The Mystery of Phantom Galaxies May Soon Be Solved
> http://www.scientificamerican.com/article/the-mystery-of-phantom-galaxies-may-soon-be-solved/?WT.mc_id=SA_DD_20160422


> In 2014 astronomers led by Pieter van Dokkum of Yale University
> pointed a sensitive array of small telescopes at a galaxy cluster in
> the constellation Coma Berenices and were astonished to discover 47
> “smudges” all over the resulting images. The smudges were not
> somebody's fingerprints; they were ghostly galaxies that appeared to
> be bizarre hybrids of giants and dwarfs. Like giants, they were as
> large as the Milky Way; like dwarfs, they were dim, emitting roughly
> a thousandth as much light. The two opposing traits account for their
> strange appearance: They look dim and ghostly because their
> relatively few stars are spread out over a huge volume of space.
>
> Moreover, these “ultradiffuse” galaxies proved to be surprisingly
> common. When astronomers looked more closely at the Coma cluster
> using the 8.3-meter Subaru Telescope, they spotted more than 800
> additional examples, and searches through archival data revealed that
> the first few members of the class appeared in observations from the
> 1980s. Faced with so many oddities, theorists are now crafting new
> models to explain how this profusion of galactic phantoms arose.


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community, and physics-related social issues.

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#572524

On Friday, April 22, 2016 at 2:42:37 PM UTC-7, Sam Wormley wrote:
> The Mystery of Phantom Galaxies May Soon Be Solved
> > http://www.scientificamerican.com/article/the-mystery-of-phantom-galaxies-may-soon-be-solved/?WT.mc_id=SA_DD_20160422
> 
> 
> > In 2014 astronomers led by Pieter van Dokkum of Yale University
> > pointed a sensitive array of small telescopes at a galaxy cluster in
> > the constellation Coma Berenices and were astonished to discover 47
> > "smudges" all over the resulting images. The smudges were not
> > somebody's fingerprints; they were ghostly galaxies that appeared to
> > be bizarre hybrids of giants and dwarfs. Like giants, they were as
> > large as the Milky Way; like dwarfs, they were dim, emitting roughly
> > a thousandth as much light. The two opposing traits account for their
> > strange appearance: They look dim and ghostly because their
> > relatively few stars are spread out over a huge volume of space.
> >
> > Moreover, these "ultradiffuse" galaxies proved to be surprisingly
> > common. When astronomers looked more closely at the Coma cluster
> > using the 8.3-meter Subaru Telescope, they spotted more than 800
> > additional examples, and searches through archival data revealed that
> > the first few members of the class appeared in observations from the
> > 1980s. Faced with so many oddities, theorists are now crafting new
> > models to explain how this profusion of galactic phantoms arose.


Just as the late Carl Sagan used to say, "There are billions and billions of them!"

Double-A

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#572534

On 4/22/16 4:56 PM, Double-A wrote:
> On Friday, April 22, 2016 at 2:42:37 PM UTC-7, Sam Wormley wrote:
>> The Mystery of Phantom Galaxies May Soon Be Solved
>>> http://www.scientificamerican.com/article/the-mystery-of-phantom-galaxies-may-soon-be-solved/?WT.mc_id=SA_DD_20160422
>>
>>
>>> In 2014 astronomers led by Pieter van Dokkum of Yale University
>>> pointed a sensitive array of small telescopes at a galaxy cluster in
>>> the constellation Coma Berenices and were astonished to discover 47
>>> "smudges" all over the resulting images. The smudges were not
>>> somebody's fingerprints; they were ghostly galaxies that appeared to
>>> be bizarre hybrids of giants and dwarfs. Like giants, they were as
>>> large as the Milky Way; like dwarfs, they were dim, emitting roughly
>>> a thousandth as much light. The two opposing traits account for their
>>> strange appearance: They look dim and ghostly because their
>>> relatively few stars are spread out over a huge volume of space.
>>>
>>> Moreover, these "ultradiffuse" galaxies proved to be surprisingly
>>> common. When astronomers looked more closely at the Coma cluster
>>> using the 8.3-meter Subaru Telescope, they spotted more than 800
>>> additional examples, and searches through archival data revealed that
>>> the first few members of the class appeared in observations from the
>>> 1980s. Faced with so many oddities, theorists are now crafting new
>>> models to explain how this profusion of galactic phantoms arose.
>
>
> Just as the late Carl Sagan used to say, "There are billions and billions of them!"
>
> Double-A
>

   Carl Sagen never said, "billions and billions".



-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

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#572542

Sam Wormley <swormley1@gmail.com> wrote:
> On 4/22/16 4:56 PM, Double-A wrote:
>> On Friday, April 22, 2016 at 2:42:37 PM UTC-7, Sam Wormley wrote:
>>> The Mystery of Phantom Galaxies May Soon Be Solved
>>>> http://www.scientificamerican.com/article/the-mystery-of-phantom-galaxies-may-soon-be-solved/?WT.mc_id=SA_DD_20160422
>>>
>>>
>>>> In 2014 astronomers led by Pieter van Dokkum of Yale University
>>>> pointed a sensitive array of small telescopes at a galaxy cluster in
>>>> the constellation Coma Berenices and were astonished to discover 47
>>>> "smudges" all over the resulting images. The smudges were not
>>>> somebody's fingerprints; they were ghostly galaxies that appeared to
>>>> be bizarre hybrids of giants and dwarfs. Like giants, they were as
>>>> large as the Milky Way; like dwarfs, they were dim, emitting roughly
>>>> a thousandth as much light. The two opposing traits account for their
>>>> strange appearance: They look dim and ghostly because their
>>>> relatively few stars are spread out over a huge volume of space.
>>>>
>>>> Moreover, these "ultradiffuse" galaxies proved to be surprisingly
>>>> common. When astronomers looked more closely at the Coma cluster
>>>> using the 8.3-meter Subaru Telescope, they spotted more than 800
>>>> additional examples, and searches through archival data revealed that
>>>> the first few members of the class appeared in observations from the
>>>> 1980s. Faced with so many oddities, theorists are now crafting new
>>>> models to explain how this profusion of galactic phantoms arose.
>>
>>
>> Just as the late Carl Sagan used to say, "There are billions and billions of them!"
>>
>> Double-A
>>
> 
>   Carl Sagen never said, "billions and billions".
 
Yes he did, a lot, AND he wrote a book with that title.

http://www.avclub.com/article/carl-sagan-did-say-billions-and-billions-lot-cosmo-213673

 
 

-- 
Jim Pennino

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#572538

Sam Wormley <swormley1@gmail.com> wrote:
> The Mystery of Phantom Galaxies May Soon Be Solved

The butler did it.


-- 
Jim Pennino

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#572544

The bright ones correspond to
negative ions,
the dim ones correspond to
cations.
We're CH2--

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#572562

On Friday, April 22, 2016 at 2:42:37 PM UTC-7, Sam Wormley wrote:
> The Mystery of Phantom Galaxies May Soon Be Solved
> > http://www.scientificamerican.com/article/the-mystery-of-phantom-galaxies-may-soon-be-solved/?WT.mc_id=SA_DD_20160422
> 
> 
> > In 2014 astronomers led by Pieter van Dokkum of Yale University
> > pointed a sensitive array of small telescopes at a galaxy cluster in
> > the constellation Coma Berenices and were astonished to discover 47
> > "smudges" all over the resulting images. The smudges were not
> > somebody's fingerprints; they were ghostly galaxies that appeared to
> > be bizarre hybrids of giants and dwarfs. Like giants, they were as
> > large as the Milky Way; like dwarfs, they were dim, emitting roughly
> > a thousandth as much light. The two opposing traits account for their
> > strange appearance: They look dim and ghostly because their
> > relatively few stars are spread out over a huge volume of space.
> >
> > Moreover, these "ultradiffuse" galaxies proved to be surprisingly
> > common. When astronomers looked more closely at the Coma cluster
> > using the 8.3-meter Subaru Telescope, they spotted more than 800
> > additional examples, and searches through archival data revealed that
> > the first few members of the class appeared in observations from the
> > 1980s. Faced with so many oddities, theorists are now crafting new
> > models to explain how this profusion of galactic phantoms arose.

  So, dark matter?


  Mark L. Fergerson

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