Posted on Sep 20, 2021
APOD: 2021 September 20 - Lynds Dark Nebula
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Good morning, Rallypoint. Today's Astronomy Picture of the Day (APOD) is titled "Lynds Dark Nebula." A dark nebula (aka an absorption nebula) a type of interstellar dust cloud that is so dense that it obscures the visible wavelengths of light from objects behind it. Anything obscured by a dark nebula is only visible through radio or infrared astronomy.
Frozen compounds coat the dust particles in these clouds: compounds like ammonia, formaldehyde, cyclopropenylidene, and a molecular ion N2H+ (diazenylium). These are relatively transparent; carbon monoxide and nitrogen are the primary culprits that block most detectable electromagnetic radiation. Dark nebula such as LDN 1251 and others (the Dark Tower in Scorpius was a featured APOD back in July) are the spawning grounds for stars and planets, making them an object of interest in astronomic research.
Frozen compounds coat the dust particles in these clouds: compounds like ammonia, formaldehyde, cyclopropenylidene, and a molecular ion N2H+ (diazenylium). These are relatively transparent; carbon monoxide and nitrogen are the primary culprits that block most detectable electromagnetic radiation. Dark nebula such as LDN 1251 and others (the Dark Tower in Scorpius was a featured APOD back in July) are the spawning grounds for stars and planets, making them an object of interest in astronomic research.
APOD: 2021 September 20 - Lynds Dark Nebula
Posted from apod.nasa.gov
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Crosby, Stills & Nash (Live) - Dark Star
From Daylight Again DVD Live Concert
Thank you my space-exploration and NASA photography advocate friend Maj William W. 'Bill' Price for posting the NASA Astronomy Picture of the Day (APOD) for Monday, September 20, 2021 entitled "Lynds Dark Nebula."
Image: Lynds Dark Nebula 1251 -Image Credit & Copyright - Cristiano Gualco
APOD Backgound
"Explanation: Stars are forming in Lynds Dark Nebula (LDN) 1251. About 1,000 light-years away and drifting above the plane of our Milky Way galaxy, the dusty molecular cloud is part of a complex of dark nebulae mapped toward the Cepheus flare region. Across the spectrum, astronomical explorations of the obscuring interstellar clouds reveal energetic shocks and outflows associated with newborn stars, including the telltale reddish glow from scattered Herbig-Haro objects hiding in the image. Distant background galaxies also lurk on the scene, almost buried behind the dusty expanse. This alluring view spans over two full moons on the sky, or 17 light-years at the estimated distance of LDN 1251."
Dark Star · Crosby, Stills & Nash
https://www.youtube.com/watch?v=-ahBPQCE2CE
FYI SMSgt Lawrence McCarterLTC (Join to see)MAJ Dale E. Wilson, Ph.D.Maj Bill Smith, Ph.D.PO1 William "Chip" NagelSPC Michael TerrellCPL Douglas ChryslerLt Col John (Jack) ChristensenGySgt Jack WallaceMSgt James Clark-RosaSGT Charlie LeeSMSgt Mark Venzeio]SGT Randell Rose SSG Michael Noll A1C Riley Sanders SGT David A. 'Cowboy' Groth SPC Margaret Higgins1st Lt Padre Dave Poedel
Image: Lynds Dark Nebula 1251 -Image Credit & Copyright - Cristiano Gualco
APOD Backgound
"Explanation: Stars are forming in Lynds Dark Nebula (LDN) 1251. About 1,000 light-years away and drifting above the plane of our Milky Way galaxy, the dusty molecular cloud is part of a complex of dark nebulae mapped toward the Cepheus flare region. Across the spectrum, astronomical explorations of the obscuring interstellar clouds reveal energetic shocks and outflows associated with newborn stars, including the telltale reddish glow from scattered Herbig-Haro objects hiding in the image. Distant background galaxies also lurk on the scene, almost buried behind the dusty expanse. This alluring view spans over two full moons on the sky, or 17 light-years at the estimated distance of LDN 1251."
Dark Star · Crosby, Stills & Nash
https://www.youtube.com/watch?v=-ahBPQCE2CE
FYI SMSgt Lawrence McCarterLTC (Join to see)MAJ Dale E. Wilson, Ph.D.Maj Bill Smith, Ph.D.PO1 William "Chip" NagelSPC Michael TerrellCPL Douglas ChryslerLt Col John (Jack) ChristensenGySgt Jack WallaceMSgt James Clark-RosaSGT Charlie LeeSMSgt Mark Venzeio]SGT Randell Rose SSG Michael Noll A1C Riley Sanders SGT David A. 'Cowboy' Groth SPC Margaret Higgins1st Lt Padre Dave Poedel
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LTC Stephen F.
The Grateful Dead & Duane Allman - Dark Star - Spanish Jam 1970
Grateful Dead Live at Fillmore East on February 11, 1970.The Grateful Dead with Duane & Gregg Allman!From "Searching for the Sound" by Phil Lesh:Jerry says t...
The Grateful Dead & Duane Allman - Dark Star - Spanish Jam 1970
https://www.youtube.com/watch?v=Sh9SyiQUfg0
FYI SPC Woody Bullard SPC Michael TerrellSPC Michael Duricko, Ph.D Maj William W. 'Bill' Price LTC John ShawSGT Steve McFarland 1LT Voyle Smith SPC Nancy GreeneLTC David BrownMSgt Dale Johnson Maj Robert ThorntonSSG Michael GrantCPL Tyler Murphy Sgt John H. Cpl Vic Burk Maj Marty Hogan SPC Douglas Bolton MSgt Robert "Rock" Aldi SSgt Marian Mitchell SSG Michael Grant SGT Mary G.
https://www.youtube.com/watch?v=Sh9SyiQUfg0
FYI SPC Woody Bullard SPC Michael TerrellSPC Michael Duricko, Ph.D Maj William W. 'Bill' Price LTC John ShawSGT Steve McFarland 1LT Voyle Smith SPC Nancy GreeneLTC David BrownMSgt Dale Johnson Maj Robert ThorntonSSG Michael GrantCPL Tyler Murphy Sgt John H. Cpl Vic Burk Maj Marty Hogan SPC Douglas Bolton MSgt Robert "Rock" Aldi SSgt Marian Mitchell SSG Michael Grant SGT Mary G.
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LTC Stephen F.
Track: SkybornArtist: Ivan TorrentAlbum: Immortalys (2017)Bandcamp: https://ivantorrent.bandcamp.com/album/immortalysiTunes: https://itunes.apple.com/us/albu...
Ivan Torrent - Skyborn
https://www.youtube.com/watch?v=igct39nlc5M
FYI Lt Col Charlie Brown A1C Riley Sanders SFC Bernard WalkoSGT Denny EspinosaSP5 Dennis LobergerMGySgt (Join to see)SFC Ralph E KelleySSG Robert WebsterSGT Randell RoseCSM (Join to see)SGM Bill Frazer SPC Woody Bullard SFC (Join to see)PFC Craig Karshner1SG Mark Rudoplh MSgt Dale JohnsonSPC Joseph KopacSSG Michael GrantCPL Tyler Murphy
https://www.youtube.com/watch?v=igct39nlc5M
FYI Lt Col Charlie Brown A1C Riley Sanders SFC Bernard WalkoSGT Denny EspinosaSP5 Dennis LobergerMGySgt (Join to see)SFC Ralph E KelleySSG Robert WebsterSGT Randell RoseCSM (Join to see)SGM Bill Frazer SPC Woody Bullard SFC (Join to see)PFC Craig Karshner1SG Mark Rudoplh MSgt Dale JohnsonSPC Joseph KopacSSG Michael GrantCPL Tyler Murphy
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I sort of see a fish tail on this cloud Maj William W. 'Bill' Price
Going to check out the full moon tonight if we have clear skies. It was quite impressive last night
Going to check out the full moon tonight if we have clear skies. It was quite impressive last night
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Looks like somebody sqeezed a plum and some grapes together and spilled the juice Maj William W. 'Bill' Price , have a great Monday sir.
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