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The Forum: Peering into Space at Aspen Ideas Festival

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06/07/2013 GMT

Peering into Space at Aspen Ideas Festival

BBC World Service - The Forum, Peering into Space at Aspen Ideas Festival

Cutting-edge space science, including asteroids, dark matter and how to detect tiny units

Cutting-edge space science from this year's Aspen Ideas Festival in Colorado. Former astronaut Edward Lu explains why we urgently need to map all sizeable near-Earth orbit asteroids if we want to avoid becoming 'dinosaur toast'. Also, Lisa Randall, a theoretical physicist at Harvard, explores the mysteries of dark matter - the invisible, seemingly inert stuff, which is thought to account for about a quarter of the mass-energy of the known universe. And Fermilab's Craig Hogan is behind a new experiment to probe the fabric of space itself, by seeing if it's possible to detect the very tiniest units in the universe.

(Image: From left to right, presenter Bridget Kendall, Craig Hogan, Edward Lu and Lisa Randall. Credit: © All rights reserved by aspeninstitute-internal

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