Bright Stars and Black Holes
Chris Riley discovers that, rather than being a hazard, black holes may be an essential part of our universe. Meanwhile, Kathy Sykes meets a man who designs prisms for the world's largest telescopes.
Chris Riley investigates black holes, the most mysterious and menacing phenomenon in the universe. A super-massive black hole lies at the heart of our own galaxy. But Chris discovers that, rather than being a hazard, these bottomless pits of gravity may be an essential part of our universe. Meanwhile, Kathy Sykes meets Francisco Diego, who designs prisms for the world's largest telescopes - and chases eclipses in his spare time.Plus we learn how comets are made, and discover the possible connection between these icy rocks and how life may have come to Earth.
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Wed 7 Mar 2001 08:30ÃÛÑ¿´«Ã½ Knowledge
Wed 7 Mar 2001 11:30ÃÛÑ¿´«Ã½ Knowledge
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