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syzygy Master Cartographer Reged: 10/06/05 Posts: 1524 Loc: Hungary A Blue Crescent Moon from Space       03/20/07 12:27 AM Edit   Reply   Quote   Quick Reply   Credit: Expedition 13 Crew, International Space Station, NASA Explanation: What's happening to the Moon? Drifting around the Earth in 2006 July, astronauts from the International Space Station (ISS) captured a crescent Moon floating far beyond the horizon. The captured above image is interesting because part of the Moon appears blue, and because part of the moon appears missing. Both effects are created by the Earth's atmosphere. Air molecules more efficiently scatter increasingly blue light, making the clear day sky blue for ground observers, and the horizon blue for astronauts. Besides reflecting sunlight, these atmospheric molecules also deflect moonlight, making the lower part of the moon appear to fade away. As one looks higher in the photograph, the increasingly thin atmosphere appears to fade to black. more from NASA - APOD page -------------------- Frequently Asked Questions have already been Answered Image hosting: ImageShack and photobucket avatar legend Post Extras

Entire topic Subject Posted by Posted on APOD - the best ever astronomy pics syzygy 09/04/06 07:59 AM A Bubble in Cygnus syzygy   11/17/08 01:43 AM A True Image from False Kiva syzygy   09/29/08 01:17 AM Yuri's Planet syzygy   04/12/08 04:52 AM Re: Yuri's Planet bullet_time   08/14/08 05:03 AM thanks and NGC 6888 syzygy   08/14/08 08:14 AM Stickney Crater, moon Phobos, Mars syzygy   04/11/08 09:59 AM What Do You See, Bright Eyes? - Mars syzygy   01/29/08 10:04 AM Bright Clumpy Moonlets and Cold Saturn Mittens syzygy   01/08/08 02:41 AM Saturn's Infrared Glow syzygy   12/29/07 03:06 AM Mars and Orion Over Monument Valley syzygy   12/26/07 04:15 AM City of Tiny Lights syzygy   11/17/07 03:34 AM Ring Scan syzygy   10/25/07 08:36 AM Circle of Confusion syzygy   10/20/07 08:24 AM The Fantastic Skies of Orphan Stars syzygy   10/18/07 09:49 AM Re: APOD - the best ever astronomy pics syzygy   10/11/07 10:30 AM A Hole in Mars Close Up syzygy   09/27/07 11:10 PM LUNAR TRANSIT syzygy   04/30/07 06:28 AM Carina Nebula Panorama from Hubble syzygy   04/25/07 06:19 AM NGC 5139: Omega Centauri syzygy   04/19/07 01:00 AM Sun in a new light -gallery- syzygy   03/31/07 02:41 AM Bullet Pillars in Orion syzygy   03/26/07 02:18 PM A Blue Crescent Moon from Space syzygy   03/20/07 12:27 AM Hubble's latest - disk galaxy NGC 5866 syzygy   03/05/07 01:23 PM Stars, Dust and Nebula in NGC 2170 syzygy   02/28/07 01:02 AM Re: APOD - the best ever astronomy pics swetepi   02/25/07 02:45 PM Planetary Nebula NGC 2440 syzygy   02/15/07 03:03 AM 'OIL SLICK' CLOUD syzygy   02/12/07 05:14 AM Galaxies Away syzygy   02/08/07 01:33 AM The Milky Way Over Paranal - animation syzygy   01/29/07 05:14 AM New Moon courting Venus & Comet McNaught arrives syzygy   01/20/07 09:27 AM Upgrading ISS syzygy   12/26/06 01:57 AM Re: Upgrading ISS Kempster   12/26/06 06:54 AM Re: Upgrading ISS syzygy   12/26/06 07:00 AM IC 2118: The Witch Head Nebula syzygy   12/12/06 04:58 AM Beauty of the Sky - by Éder Iván astrophotographer syzygy   10/30/06 12:47 PM Re: Beauty of the Sky - by Éder Iván astrophotogra heamit   01/22/07 01:13 AM Help Search for Interstellar Dust !!! syzygy   10/26/06 01:36 AM saturn -heavenly glory- syzygy   10/16/06 02:02 PM Re: saturn -heavenly glory- no_stranger   03/04/07 11:29 AM Re: APOD - the best ever solar sys pic Aulo   10/05/06 09:22 AM Re: APOD - the best ever solar sys pic syzygy   10/05/06 10:36 AM Re: APOD - the best ever solar sys pic Villaman   09/06/06 12:16 AM Re: APOD - the best ever solar sys pic masterlink78   09/05/06 04:06 PM Pluto syzygy   09/05/06 11:59 PM

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