Reblogged from Research & Collections:

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By this weekend, we may have an opportunity to see one of two bright comets likely to pass through our planetary neighborhood this year. The first one, comet PANSTARRS, starts its Northern Hemisphere arrival March 8-10, continuing through mid-March. This will be the ONLY time anyone on Earth will see PANSTARRS (or, less-affectionately,  C/2011 L4); as it is a non-periodic…

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