The most accurate catalogue of the distances to more than 100,000 stars has just been released.Cambridge astronomer Dr Floor van Leeuwen has spent the past 10 years checking and recalculating data gathered by the Hipparcos satellite.
It collected the information in the 1990s, but questions were raised about apparent errors in the results.
Dr van Leeuwen, who saw a flaw in the way Hipparcos worked, has now corrected the star distances.
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