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Astronomy Picture of the Day -- 21st Century M101
NASA ^ | July 13, 2012 | (see photo credit)

Posted on 07/13/2012 4:12:38 AM PDT by SunkenCiv

Explanation: One of the last entries in Charles Messier's famous catalog, big, beautiful spiral galaxy M101 is definitely not one of the least. About 170,000 light-years across, this galaxy is enormous, almost twice the size of our own Milky Way Galaxy. M101 was also one of the original spiral nebulae observed with Lord Rosse's large 19th century telescope, the Leviathan of Parsontown. In contrast, this mulitwavelength view of the large island universe is a composite of images recorded by space-based telescopes in the 21st century. Color coded From X-rays to infrared wavelengths (high to low energies), the image data was taken from the Chandra X-ray Observatory (purple), the Galaxy Evolution Explorer (blue), Hubble Space Telescope (yellow), and the Spitzer Space Telescope (red). While the X-ray data trace the location of multimillion degree gas around M101's exploded stars and neutron star and black hole binary star systems, the lower energy data follow the stars and dust that define M101's grand spiral arms. Also known as the Pinwheel Galaxy, M101 lies within the boundaries of the northern constellation Ursa Major, about 25 million light-years away.

July 13, 2012

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; chandra; charlesmessier; hst; lordrosse; m101; messierobject; milkywaygalaxy; pinwheelgalaxy; science; spitzer; telescope; ursamajor
[Credit: NASA, ESA, CXC, JPL, Caltech STScI]

1 posted on 07/13/2012 4:12:52 AM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...
Another of Charles "Charlie" Messier's messier objects.

2 posted on 07/13/2012 4:14:16 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv

rather large isn’t it?

any one of those dots could have a guy typing on a keyboard right now.

ok, no more latte today.


3 posted on 07/13/2012 5:07:57 AM PDT by beebuster2000
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To: SunkenCiv

Oh, my my! What a beauty, and twice as big as the Milky Way!


4 posted on 07/13/2012 8:30:43 PM PDT by TheOldLady
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