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Deep Impact
How might the Earth protect itself against an asteroid strike? The Deep Impact mission hopes to reveal the nature of the threat and how to deflect it safely, it has already discovered over 43,000 asteroids but not all pose a threat to the earth.
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BBC World Service Archive
This programme was restored as part of the World Service archive project
Space
The eclipses, spacecraft and astronauts changing our view of the Universe
The Curious Cases of Rutherford and Fry
A pair of scientific sleuths answer your perplexing questions. Ask them anything!
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Discovery
Explorations in the world of science.
