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Re: The Mystery of Phantom Galaxies May Soon Be Solved

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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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Thread

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

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