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    22, 2016 Final Stats | Quotes | Notes | USATSI Photo Gallery | Photo Gallery 2 | Photo Gallery 3 LAS VEGAS, Nev.


    Dating planetary surfaces

    AA(Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, DK-4000 Roskilde, Denmark), AB(Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, DK-4000 Roskilde, Denmark), AC(Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, DK-4000 Roskilde, Denmark), AD(cosine Research B.

    When they get close enough to a planet or moon, they will be pulled in by the large body's gravity and strike the surface at a speed of at least the escape velocity of the planet or moon, i.e., faster than a bullet.Coaxing out that information is far more difficult.Zigzagging across his laboratory is a web of laser beams that feed into a mass spectrometer — all part of a geochronometer that Anderson is building.Next to it rests a dark sliver of 2.8-billion-year-old lava from the Moon.Anderson, a planetary scientist at the Southwest Research Institute in Boulder, Colorado, picks up his favourite, a 1-gram slice of rock that cost him US0.

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