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The Amateur who Finds Planets
Amateur British astronomer Kevin Apps talks about his role in discovering new planets
Amateur British astronomer Kevin Apps talks about his role in discovering new planets.
Massive compact halo objects, or MACHOs explained by Rabindra Mohapatra of the University of Maryland.
Plus what was happening among the stars and planets in March 1999.
This is a programme from the 大象传媒 World Service Archive and was originally broadcast in 1999.
