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August 12, 2009 02:28 PM
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I think the new facts revealed about a supermassive black hole at the galactic center of the Milky Way is pretty cool. Also the fact that the 4 arms of our galaxy are named as follows:
----quote----
cyan 3-kpc and Perseus Arm
purple Norma and Outer arm (Along with a newly discovered extension)
green Scutum-Crux Arm
pink Carina and Sagittarius Arm
There are at least two smaller arms or spurs, including:
orange Orion-Cygnus arm (which contains the Sun and Solar System)
----/quote----
Source(s):
http://en.wikipedia.org/wiki/Milky_way_galaxy
http://en.wikipedia.org/wiki/Galactic_Center
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What are the interesting features about the Milky Way?
What catches your attention about the Milky Way that is not easily known?
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| August 12, 2009 04:02 PM |
----quote----
cyan 3-kpc and Perseus Arm
purple Norma and Outer arm (Along with a newly discovered extension)
green Scutum-Crux Arm
pink Carina and Sagittarius Arm
There are at least two smaller arms or spurs, including:
orange Orion-Cygnus arm (which contains the Sun and Solar System)
----/quote----
Source(s):
http://en.wikipedia.org/wiki/Milky_way_galaxy
http://en.wikipedia.org/wiki/Galactic_Center
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What is known : The galactic center has a compact object of large mass which affects the swirl around it, radio and X-ray waves are being emitted, and the general belief is that most galaxies have supermassive black holes at the center.
I doubt the galactic center is a blackhole. The core center is massive. Blackholes have accretion disks that emit certain X-Ray burst patterns. Is the Galactic center emitting Hawking radiation?