by APOD Robot » Tue Oct 27, 2015 4:07 am
Bright from the Heart Nebula
Explanation: What's that inside the Heart Nebula? First, the large
emission nebula dubbed
IC 1805 looks, in whole, like a
human heart. The nebula glows brightly in red light emitted by its most prominent element:
hydrogen. The red glow and the larger shape are all created by a small group of stars near the
nebula's center. In the center of the Heart Nebula are young stars from the open star cluster
Melotte 15 that are eroding away several picturesque dust pillars with their energetic light and winds. The
open cluster of stars contains a few
bright stars nearly 50 times the mass of our Sun, many dim stars only a fraction of the mass of our Sun, and an
absent microquasar that was expelled millions of years ago. The
Heart Nebula is located about 7,500
light years away toward the
constellation of
Cassiopeia. At the top right is the companion
Fishhead Nebula.
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[url=http://apod.nasa.gov/apod/ap151027.html][img]http://apod.nasa.gov/apod/calendar/S_151027.jpg[/img] [size=150]Bright from the Heart Nebula[/size][/url]
[b] Explanation: [/b] What's that inside the Heart Nebula? First, the large [url=http://apod.nasa.gov/apod/emission_nebulae.html]emission nebula[/url] dubbed [url=http://apod.nasa.gov/apod/ap040917.html]IC 1805[/url] looks, in whole, like a [url=http://www.vet.cornell.edu/news/FentonCherry/Media/files/structure.html]human heart[/url]. The nebula glows brightly in red light emitted by its most prominent element: [url=http://en.wikipedia.org/wiki/Hydrogen]hydrogen[/url]. The red glow and the larger shape are all created by a small group of stars near the [url=http://apod.nasa.gov/apod/ap141018.html]nebula's center[/url]. In the center of the Heart Nebula are young stars from the open star cluster [url=http://apod.nasa.gov/apod/ap131227.html]Melotte 15[/url] that are eroding away several picturesque dust pillars with their energetic light and winds. The [url=http://asterisk.apod.com/viewtopic.php?f=24&t=18009]open cluster[/url] of stars contains a few [url=http://adsabs.harvard.edu/abs/2006A%26A...456.1121D]bright stars[/url] nearly 50 times the mass of our Sun, many dim stars only a fraction of the mass of our Sun, and an [url=http://apod.nasa.gov/apod/ap040916.html]absent microquasar[/url] that was expelled millions of years ago. The [url=http://apod.nasa.gov/apod/ap031022.html]Heart Nebula[/url] is located about 7,500 [url=http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question19.html]light years[/url] away toward the [url=http://modernconstellations.com/constellationhistory.html]constellation[/url] of [url=http://messier.seds.org/map/Cas.html]Cassiopeia[/url]. At the top right is the companion [url=http://apod.nasa.gov/apod/ap141224.html]Fishhead Nebula[/url].
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