This week’s naked-eye object is open cluster M25 in Sagittarius. Observers also know this object as IC 4725. You’ll find it 4.4° east-northeast of magnitude 3.8 Mu (μ) Sagittarii. At magnitude 4.6, ...
In fall and winter, the Pleiades and Hyades star clusters brighten our nights. Both are plainly visible without optical aid even from the suburbs. And every spring ...
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