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COPYRIGHT 2005 Natural History Magazine, Inc.
Mercury, shining at magnitude -1.2, can be glimpsed with the naked eye during the first week of September, even though it is barely above the eastern horizon at middawn. On the morning of the 4th the first-magnitude star Regulus can be seen just over one degree (two full-Moon diameters) to the lower right of Mercury. The planet reaches superior conjunction on the 17th, making it invisible in the solar glare as it passes behind the...
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