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Why parsecs can be confusing
Neil deGrasse Tyson discusses the astronomical unit called a parsec and explains why it can sometimes be misunderstood outside scientific contexts. California election experts sound alarm as rejected ...
Comet C/2014 Q2 (Lovejoy) is one of more than 32 comets imaged by NASA's NEOWISE mission from December 2013 to December 2014. This image of comet Lovejoy combines a series of observations made in ...
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