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Protests in Georgia ...
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ZME Science on MSNThe Sound of the Big Bang Might Be Telling Us Our Galaxy Lives in a Billion-Light-Year-Wide Cosmic HoleImagine waking up one day to find out you live inside a vast, invisible bubble — a region of space so vast it stretches a ...
Particular stars called Cepheid variables allow astronomers to determine distance, and Hubble spotted one of these within M31 ...
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