Fig. 5
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Comet C/1901 G1 (Viscara). The left panel is from Wikipedia5, a photograph obtained by Edward Emerson Barnard, 1857–1923, during the United States Naval Observatory expedition to Sumatra. It is in the public domain, via Wikimedia Commons. The simulated image in the right panel has dimensions of 735 378 × 982 689 km projected on the sky.
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