by APOD Robot » Mon Jul 04, 2016 4:10 am
IC 4628: The Prawn Nebula
Explanation: South of
Antares, in the tail of the
nebula-rich constellation Scorpius, lies emission nebula
IC 4628. Nearby hot, massive stars, millions of years young,
radiate the nebula with invisible ultraviolet light, stripping electrons from atoms. The
electrons eventually recombine with the atoms to produce the visible
nebular glow, dominated by the red emission of
hydrogen. At an estimated distance of 6,000 light-years,
the region shown is about 250 light-years across,
spanning an area equivalent to four full moons
on the sky. The nebula is also
cataloged as Gum 56 for Australian astronomer
Colin Stanley Gum, but seafood-loving astronomers might
know this cosmic cloud as the
Prawn Nebula.
[/b]
[url=http://apod.nasa.gov/apod/ap160704.html][img]http://apod.nasa.gov/apod/calendar/S_160704.jpg[/img] [size=150]IC 4628: The Prawn Nebula[/size][/url]
[b] Explanation: [/b] South of [url=http://apod.nasa.gov/apod/ap060714.html]Antares[/url], in the tail of the [url=http://apod.nasa.gov/apod/ap060628.html]nebula-rich[/url] constellation Scorpius, lies emission nebula [url=http://en.wikipedia.org/wiki/Prawn_Nebula]IC 4628[/url]. Nearby hot, massive stars, millions of years young, [url=http://en.wikipedia.org/wiki/H_II_region]radiate the nebula[/url] with invisible ultraviolet light, stripping electrons from atoms. The [url=http://www-spof.gsfc.nasa.gov/Education/whelect.html]electrons[/url] eventually recombine with the atoms to produce the visible [url=http://apod.nasa.gov/apod/ap080424.html]nebular glow[/url], dominated by the red emission of [url=http://periodic.lanl.gov/1.shtml]hydrogen[/url]. At an estimated distance of 6,000 light-years, [url=http://www.youtube.com/watch?v=W98Rwc8tWZs]the region[/url] shown is about 250 light-years across, [url=http://www.allpetnews.com/wp-content/uploads/2011/10/Cat-Stretched-Out-300x200.jpg]spanning[/url] an area equivalent to four full moons [url=http://apod.nasa.gov/apod/ap130801.html]on the sky[/url]. The nebula is also [url=http://apod.nasa.gov/apod/ap060519.html]cataloged as[/url] Gum 56 for Australian astronomer [url=http://en.wikipedia.org/wiki/Colin_Gum]Colin Stanley Gum[/url], but seafood-loving astronomers might [url=http://www.pbase.com/strongmanmike2002/image/163483379/original]know this cosmic cloud[/url] as the [url=http://en.wikipedia.org/wiki/Prawn]Prawn Nebula[/url].
[b][table][tr][td=left][url=http://asterisk.apod.com/discuss_apod.php?date=160703]<< Previous APOD[/url][/td] [td=center][url=http://asterisk.apod.com/view_retro.php?date=0704]This Day in APOD[/url][/td] [td=right][url=http://asterisk.apod.com/discuss_apod.php?date=160705]Next APOD >>[/url][/td][/tr][/table][/b]