NOAO
In the December 2009 issue, I wrote the story, “How to observe comets.” In it, I suggest all observers estimate how bright a comet appears. To get the whole picture, however, you must factor in one other thing.
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In the December 2009 issue, I wrote the story, “How to observe comets.” In it, I suggest all observers estimate how bright a comet appears. To get the whole picture, however, you must factor in one other thing.