by APOD Robot » Mon Nov 25, 2019 5:05 am
NGC 6995: The Bat Nebula
Explanation: Do you see the bat? It haunts
this cosmic close-up of the eastern
Veil Nebula.
The Veil Nebula itself is a large supernova remnant, the expanding debris cloud from the
death explosion of a massive star. While the Veil is roughly
circular in shape and covers nearly 3 degrees on the sky toward the constellation of the Swan (
Cygnus), the Bat Nebula, NGC 6995, spans only 1/2 degree, about the apparent size
of the Moon. That
translates to 12 light-years at the Veil's estimated distance, a reassuring 1,400 light-years from
planet Earth. In the composite of image data recorded through broad and
narrow band filters, emission from
hydrogen atoms in the remnant is shown in red with strong emission from oxygen and nitrogen atoms shown in hues of blue. Of course, in the western part of the Veil lies another seasonal apparition:
the Witch's Broom Nebula.
[url=https://apod.nasa.gov/apod/ap191125.html] [img]https://apod.nasa.gov/apod/calendar/S_191125.jpg[/img] [size=150]NGC 6995: The Bat Nebula[/size][/url]
[b] Explanation: [/b] Do you see the bat? It haunts [url=https://astrodrudis.com/ngc-6995-the-bat-nebula/]this cosmic close-up[/url] of the eastern [url=https://en.wikipedia.org/wiki/Veil_Nebula]Veil Nebula[/url]. [url=https://apod.nasa.gov/apod/ap191031.html]The Veil Nebula[/url] itself is a large supernova remnant, the expanding debris cloud from the [url=https://www.youtube.com/watch?v=OyntBsxoEkA]death explosion[/url] of a massive star. While the Veil is roughly [url=https://www.mathsisfun.com/algebra/trig-interactive-unit-circle.html]circular[/url] in shape and covers nearly 3 degrees on the sky toward the constellation of the Swan ([url=https://en.wikipedia.org/wiki/Cygnus_(constellation)]Cygnus[/url]), the Bat Nebula, NGC 6995, spans only 1/2 degree, about the apparent size [url=https://apod.nasa.gov/apod/ap130801.html]of the Moon[/url]. That [url=http://chandra.harvard.edu/photo/scale_distance.html]translates[/url] to 12 light-years at the Veil's estimated distance, a reassuring 1,400 light-years from [url=https://www.globe.gov/en]planet Earth[/url]. In the composite of image data recorded through broad and [url=https://apod.nasa.gov/apod/ap071102.html]narrow band[/url] filters, emission from [url=https://periodic.lanl.gov/1.shtml]hydrogen[/url] atoms in the remnant is shown in red with strong emission from oxygen and nitrogen atoms shown in hues of blue. Of course, in the western part of the Veil lies another seasonal apparition: [url=https://apod.nasa.gov/apod/ap180408.html]the Witch's Broom[/url] Nebula.
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