Posted on Nov 30, 2019
APOD: 2019 November 30 - Star Trails for a Red Planet
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Posted 5 y ago
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Red Planet Nocturne (Theme to Offworld Trading Company) - Christopher Tin
The full Offworld Trading Company soundtrack (30 songs/76 minutes) is available at: Direct: https://gumroad.com/christophertin iTunes: https://itunes.apple.c...
Good early Sunday December 1, 2019 morning, my friend Maj William W. 'Bill' Price and thank you for posting the NASA Astronomy Picture of the Day (APOD) for Saturday, November 30, 2019 entitled "Star Trails for a Red Planet."
Image: Star Trails for a Red Planet - Image Credit & Copyright - Dengyi Huang
"Explanation: Does Mars have a north star? In long exposures of Earth's night sky, star trails make concentric arcs around the north celestial pole, the direction of our fair planet's axis of rotation. Bright star Polaris is presently the Earth's North Star, close on the sky to Earth's north celestial pole. But long exposures on Mars show star trails too, concentric arcs about a celestial pole determined by Mars' axis of rotation. Tilted like planet Earth's, the martian axis of rotation points in a different direction in space though. It points to a place on the sky between stars in Cygnus and Cepheus with no bright star comparable to Earth's north star Polaris nearby. So even though this ruddy, weathered landscape is remarkably reminiscent of terrain in images from the martian surface, the view must be from planet Earth, with north star Polaris near the center of concentric star trails. The landforms in the foreground are found in Qinghai Province in northwestern China."
Red Planet Nocturne (Theme to Offworld Trading Company) - Christopher Tin
https://www.youtube.com/watch?v=qwmYXylxA3g
FYI Sgt (Join to see) Maj Marty Hogan PO1 William "Chip" Nagel SSG Michael Noll TSgt Rodney BidingerSGT Steve McFarlandSFC Jack ChampionPO2 John ZodunCpl James R. " Jim" Gossett JrSP5 Jeannie CarleSPC Chris Bayner-CwikTSgt David L.PO1 Robert GeorgeSSG Robert Mark OdomSPC Matthew LambSSG Robert "Rob" WentworthPV2 Brian HatcherCapt Rich BuckleyCW4 G.L. Smith
Image: Star Trails for a Red Planet - Image Credit & Copyright - Dengyi Huang
"Explanation: Does Mars have a north star? In long exposures of Earth's night sky, star trails make concentric arcs around the north celestial pole, the direction of our fair planet's axis of rotation. Bright star Polaris is presently the Earth's North Star, close on the sky to Earth's north celestial pole. But long exposures on Mars show star trails too, concentric arcs about a celestial pole determined by Mars' axis of rotation. Tilted like planet Earth's, the martian axis of rotation points in a different direction in space though. It points to a place on the sky between stars in Cygnus and Cepheus with no bright star comparable to Earth's north star Polaris nearby. So even though this ruddy, weathered landscape is remarkably reminiscent of terrain in images from the martian surface, the view must be from planet Earth, with north star Polaris near the center of concentric star trails. The landforms in the foreground are found in Qinghai Province in northwestern China."
Red Planet Nocturne (Theme to Offworld Trading Company) - Christopher Tin
https://www.youtube.com/watch?v=qwmYXylxA3g
FYI Sgt (Join to see) Maj Marty Hogan PO1 William "Chip" Nagel SSG Michael Noll TSgt Rodney BidingerSGT Steve McFarlandSFC Jack ChampionPO2 John ZodunCpl James R. " Jim" Gossett JrSP5 Jeannie CarleSPC Chris Bayner-CwikTSgt David L.PO1 Robert GeorgeSSG Robert Mark OdomSPC Matthew LambSSG Robert "Rob" WentworthPV2 Brian HatcherCapt Rich BuckleyCW4 G.L. Smith
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LTC Stephen F.
FYI SPC Russ BoltonSGT Jim ArnoldPO3 Phyllis MaynardSPC Mark HuddlestonSGT Rick ColburnSgt Vance BondsMaj Robert ThorntonPO2 Rick FoxPO1 H Gene LawrenceNicci EisenhauerLTC Stephan Porter MSgt David HoffmanSFC (Join to see)cmsgt-rickey-denickeSgt John H.PVT Mark ZehnerSGT Robert R.CPT Tommy CurtisSGT (Join to see)
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Woah, this is so cool! Thanks for another APOD Maj William W. 'Bill' Price and good morning!
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