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Black Holes and Beyond
Episode 4 of 6
Professor Stephen Hawking looks at how radio astronomy and the discovery of quasars affected the debate about the existence of black holes.
Last on
Fri 11 Jan 2002
14:00
大象传媒 Knowledge
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Evidence of black holes
Duration: 04:44
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Sun 21 Sep 1997 19:45大象传媒 Two except East, South East & Yorkshire- Wed 31 Jan 2001 08:00大象传媒 Knowledge
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- Fri 11 Jan 2002 14:00大象传媒 Knowledge