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The earth casts its shadow on the setting super blue blood moon during a lunar eclipse at about 6:31 a.m. Jan. 31, 2018, in Chicago.
John J. Kim / Chicago Tribune
The earth casts its shadow on the setting super blue blood moon during a lunar eclipse at about 6:31 a.m. Jan. 31, 2018, in Chicago.
Chicago Tribune
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The sky on the morning of Jan. 31, 2018, marked a celestial affair that hasn’t occurred in the Chicago area in more than 150 years. Known as a super blue blood moon, the cosmic experience is the convergence of a trifecta of lunar events.