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Asteroids
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In Our Time - Radio 4 program on Asteroids.

It is thought that asteroids are the unused building blocks of planets, 'pristine material' that has remained chemically unchanged since the creation of the solar system; a snapshot of matter at the beginning of time.

Contributors
Monica Grady, Professor of Planetary and Space Sciences at the Open University
Carolin Crawford, Royal Society Research Fellow at the University of Cambridge
John Zarnecki, Professor of Space Science at the Open University

LISTEN (realplayer stream)

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