by APOD Robot » Sun Apr 03, 2016 4:07 am
Close-up of the Bubble Nebula
Explanation: It's the bubble versus the cloud. NGC 7635, the
Bubble Nebula, is being pushed out by the
stellar wind of massive central star
BD+602522. Next door, though, lives a giant
molecular cloud, visible to the right. At this place in space, an
irresistible force meets an
immovable object in an interesting way. The
cloud is able to contain the expansion of the bubble gas, but gets blasted by the hot radiation from the
bubble's central star. The
radiation heats up dense regions of the
molecular cloud causing it to glow. The
Bubble Nebula,
featured here in scientifically mapped colors to bring up contrast, is about 10
light-years across and part of a much
larger complex of stars and shells. The
Bubble Nebula can be seen with a small telescope towards the
constellation of the Queen of
Aethiopia (
Cassiopeia).
[/b]
[url=http://apod.nasa.gov/apod/ap160403.html][img]http://apod.nasa.gov/apod/calendar/S_160403.jpg[/img] [size=150]Close-up of the Bubble Nebula[/size][/url]
[b] Explanation: [/b] It's the bubble versus the cloud. NGC 7635, the [url=http://apod.nasa.gov/apod/ap141002.html]Bubble Nebula[/url], is being pushed out by the [url=http://apod.nasa.gov/apod/ap000318.html]stellar wind[/url] of massive central star [url=http://adsabs.harvard.edu/abs/2002AJ....124.3305M]BD+602522[/url]. Next door, though, lives a giant [url=http://apod.nasa.gov/apod/ap141214.html]molecular cloud[/url], visible to the right. At this place in space, an [url=http://en.wikipedia.org/wiki/Irresistible_force_paradox]irresistible force[/url] meets an [url=http://1.bp.blogspot.com/-s8wPzTQVHwk/TZ23dhVwPTI/AAAAAAAAARY/1SsZ9s_A_J4/s1600/big+pumpkin.jpg]immovable object[/url] in an interesting way. The [url=http://heritage.stsci.edu/1998/31/index.html]cloud[/url] is able to contain the expansion of the bubble gas, but gets blasted by the hot radiation from the [url=http://www.exploratorium.edu/ronh/bubbles/bubbles.html]bubble[/url]'s central star. The [url=http://imagine.gsfc.nasa.gov/educators/lessons/xray_spectra/background-em.html]radiation[/url] heats up dense regions of the [url=http://en.wikipedia.org/wiki/Molecular_cloud]molecular cloud[/url] causing it to glow. The [url=http://apod.nasa.gov/apod/ap030617.html]Bubble Nebula[/url], [url=http://geckzilla.com/art/v/458]featured here[/url] in scientifically mapped colors to bring up contrast, is about 10 [url=http://chandra.harvard.edu/photo/cosmic_distance.html]light-years[/url] across and part of a much [url=http://apod.nasa.gov/apod/ap100909.html]larger complex[/url] of stars and shells. The [url=https://en.wikipedia.org/wiki/NGC_7635]Bubble Nebula[/url] can be seen with a small telescope towards the [url=http://www.astro.wisc.edu/~dolan/constellations/extra/constellations.html]constellation[/url] of the Queen of [url=http://en.wikipedia.org/wiki/Ethiopia_(mythology)]Aethiopia[/url] ([url=http://www.hawastsoc.org/deepsky/cas/]Cassiopeia[/url]).
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