It is the [[optic]]ally brightest quasar in the sky ([[apparent magnitude|m]] ~12.9), and one of the closest with a [[redshift]
...[parsec]]s) it would [[Apparent magnitude|appear nearly as bright]] in the sky as the [[Sun]]. Since the sun's [[absolute magnitude]] is 4.83, it means th
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11 KB (1,478 words) - 14:28, 5 February 2018
The '''Sloan Digital Sky Survey''' or '''SDSS''' is a major multi-spectral imaging and spectroscopic
...nal [[Photometry (astronomy)|imaging]] data release covers over 35% of the sky, with [[Photometry (astronomy)|photometric]] observations of around 500 mil
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25 KB (3,589 words) - 14:34, 5 February 2018
{{Sky|12|36|49.4|+|62|12|58|100000000000}}
...ea about 2.6 [[arcminute]]s on a side, about one 24-millionth of the whole sky, which is equivalent in angular size to a [[tennis ball]] at a distance of
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33 KB (4,612 words) - 14:32, 5 February 2018
...= astro-ph/9811051 }}</ref> The galaxy is also the fifth-brightest in the sky,<ref name="israel1998"/> making it an ideal amateur astronomy target,<ref n
...recent [[star formation]];<ref name="israel1998"/> over 100 star formation regions have been identified in the disk.<ref name="hodgekennicutt1983">{{cite jour
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29 KB (4,015 words) - 14:30, 5 February 2018
...iron whiskers]], which were meant to provide a source for a pervasive, all-sky microwave background that was not due to an early universe phase transition
...ted that the motion may be a remnant of the influence of no-longer-visible regions of the universe prior to inflation. The detection is controversial, and oth
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41 KB (6,072 words) - 21:16, 4 February 2018