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Space Technology

ESA Still Searching For Philae; May Have Zeroed In On a Possible Location 21

hypnosec writes with the news that the European Space Agency may have located the agency's Philae lander. The official Rosetta blog says Fortunately, it was possible to narrow down the lander’s final location by using the radio signals sent between Philae and Rosetta as part of the CONSERT experiment after the final touchdown. Combining data on the signal travel time between the two spacecraft with the known trajectory of Rosetta and the current best shape model for the comet, the CONSERT team have been able to establish the location of Philae to within an ellipse roughly 16 x 160 metres in size, just outside the rim of the Hatmehit depression. That means just a few candidates for Philae's current location, based on imaging performed by Rosetta's OSIRIS camera.
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ESA Still Searching For Philae; May Have Zeroed In On a Possible Location

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  • It's on the fricking comet. At this point, what difference does it make where it is exactly?

    • Wild guess.. You don't work in the space industry do you?
    • by Applehu Akbar ( 2968043 ) on Saturday June 13, 2015 @11:39PM (#49907097)

      Knowing the exact location would be important in determining whether it will get sunlight - and therefore revive - as the comet draws closer to perihelion.

      • by Anonymous Coward

        Knowing the exact location would be important in determining whether it will get sunlight - and therefore revive - as the comet draws closer to perihelion.

        Quite important apparently - as it has just done exactly that.

        http://www.bbc.co.uk/news/science-environment-33126885 [bbc.co.uk]

    • Beyond the things already mentioned, maybe to verify again if our intellectual ability to predict complex events from measurements actually works?
    • by Anonymous Coward

      The first thing any geologist will tell you is that if you have a rock removed from its context, any tests you do are worth a lot less. The lander did all sorts of tests. Knowing the exact location will allow the context to be determined, and allow extrapolation from that point to the rest of the comet surface if it has similar terrain and spectral characteristics. Without the location, you don't really know what you've sampled.

  • by Anonymous Coward on Sunday June 14, 2015 @06:36AM (#49908075)

    http://www.bbc.co.uk/news/science-environment-33126885

Every nonzero finite dimensional inner product space has an orthonormal basis. It makes sense, when you don't think about it.

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