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08-September-2005, 07:05 PM
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200,000 Quasars Confirm Einstein's Prediction
SUMMARY: An international team of astronomers have performed a robust survey of quasars to confirm a prediction from Albert Einstein about how gravity should magnify the light traveling from distant objects. The study showed how the light from 200,000 quasars is being tugged by the gravity of 13 million galaxies as it travels from the quasars to the Earth. The researchers used the Sloan Digital Sky Survey to uncover thousands of new quasars which could then fine-tune their observations.
View full article What do you think about this story? post your comments below. 
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08-September-2005, 07:48 PM
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Yay for General Relativity! I really need to cath up with the news more frequently, 200000 quasars is really an impressive number, in my notes I had written that only 12000 quasars were known. I will search the SDSS catalog to discover if indeed more than 200000 are known
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Travelling around the Universe
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08-September-2005, 09:14 PM
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Interesting. I'll have to read the journal paper, but this may put to rest the Arp-ian people who claim quasars are at the same distance as galaxies!
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Phil Plait The Bad Astronomer http://www.badastronomy.com badastro@badastronomy.com
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