Click here if you are having trouble logging into the forums Cloudy Nights - Official Forums of the 2009 International Year of Astronomy Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Other >> Science of Astronomy & Space exploration Previous   Index   Next   Threaded   Pages: 1 Anonymous Unregistered Ice geysers 'discovered on Mars'       #1105870 - 08/21/06 12:30 PM Edit   Reply   Quote Quick Reply   Ice geysers 'discovered on Mars' An artist's impression shows the geysers erupting through ice Geysers spewing sand and dust hundreds of feet into the air have been discovered on Mars, scientists say. Images from a camera orbiting Mars have shown the 100mph jets of carbon dioxide erupt through ice at the planet's south pole, Arizona State University says. The orbiting camera, called the Thermal Emission Imaging System (Themis), is on the Mars Odyssey probe. The geyser debris leaves dark spots, fan-like markings and spider-shaped features on the ice cap. The scientists said geysers erupted when sunlight warming the ice turned frozen carbon dioxide underground into high-pressure gas. "If you were there, you'd be standing on a slab of carbon dioxide ice," said the university's Dr Phil Christensen. "All around you, roaring jets of CO2 gas are throwing sand and dust a couple of hundred feet into the air." Dr Christensen said the process was "unlike anything that occurs on Earth". His team discovered the jets through examining more than 200 Themis visible and infrared images. The findings were published in the latest edition of the journal Nature Post Extras:       dgs© Postmaster Reged: 03/29/04 Posts: 13899 Loc: West Monroe, Louisiana Re: Ice geysers 'discovered on Mars' [Re: ]       #1107232 - 08/21/06 11:10 PM Edit   Reply   Quote Quick Reply   Seems perfectly obvious once someone points it out. I caught just a piece of this story where they were explaining the dark areas on the polar ice cap. -------------------- - david 8"Ø Newtonian on SVP, Moonlite CR2, Telrad PST Oberwerk Ultra 15x70 Orion Ultraview 10×50 Hand-me-down Sears Refractor (Discoverer) 60mm×900mm "What we have done for ourselves alone dies with us; what we have done for others and the world, remains and is immortal." --Albert Pike Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 1 registered and 0 anonymous users are browsing this forum. Moderator:  llanitedave  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 219 Jump to *International Year of Astronomy 2009* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA*Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   General Observing   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Other* -----   Science of Astronomy & Space exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements Home

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