by APOD Robot » Mon Feb 05, 2018 5:09 am
NGC 7635: The Bubble Nebula Expanding
Explanation: It's the bubble versus the cloud. NGC 7635, the
Bubble Nebula, is being pushed out by the
stellar wind of massive star
BD+602522, visible in blue toward the right, inside the nebula. Next door, though, lives a giant
molecular cloud, visible to the far right in red. 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,
pictured here 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=https://apod.nasa.gov/apod/ap180205.html][img]https://apod.nasa.gov/apod/calendar/S_180205.jpg[/img] [size=150]NGC 7635: The Bubble Nebula Expanding[/size][/url]
[b] Explanation: [/b] It's the bubble versus the cloud. NGC 7635, the [url=https://apod.nasa.gov/apod/ap091030.html]Bubble Nebula[/url], is being pushed out by the [url=https://apod.nasa.gov/apod/ap000318.html]stellar wind[/url] of massive star [url=http://adsabs.harvard.edu/abs/2002AJ....124.3305M]BD+602522[/url], visible in blue toward the right, inside the nebula. Next door, though, lives a giant [url=https://apod.nasa.gov/apod/ap171008.html]molecular cloud[/url], visible to the far right in red. 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/docs/science/know_l1/emspectrum.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=https://apod.nasa.gov/apod/ap030617.html]Bubble Nebula[/url], [url=https://commons.wikimedia.org/wiki/File:Bubble_Nebula_NGC7635_Goran_Nilsson_%26_The_Liverpool_Telescope.jpg]pictured here[/url] is about 10 [url=http://chandra.harvard.edu/photo/cosmic_distance.html]light-years[/url] across and part of a much [url=https://apod.nasa.gov/apod/ap171026.html]larger complex[/url] of stars and shells. The [url=https://apod.nasa.gov/apod/ap170531.html]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=https://en.wikipedia.org/wiki/Aethiopia]Aethiopia[/url] ([url=http://www.hawastsoc.org/deepsky/cas/]Cassiopeia[/url]).
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