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Asteroids

In Our Time

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The Overlap Between Asteroids and Comets

You're involved in European Space Agency's Rosetta mission, which is going to try to land on a comet and bring some samples back. What do you expect to find from the analysis of these things? It's really still to me, even though I've been involved with it for some years, still sounds like science fiction, but the spacecraft is already on its way. And there is a remarkable, essentially, chemistry laboratory, built by my colleagues at the Open University, that will actually attempt to do a chemical analysis of the material in the comet. So this is going to arrive at its target comet in 2010. The instrument I'm involved with will try and measure physical properties, how hard

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