Sky This Week is brought to you in part by Celestron. Friday, April 24Venus passes 0.8° due north of Uranus at 1 A.M. EDT.

The first observer to catalog differences in star brightnesses was Greek astronomer Hipparchus. He created a catalog around 135 B.C.E. of roughly 850 stars divided into six ranges. He called the ...

We’re getting ready to say goodbye to the summertime constellations, including Cygnus the Swan, now about 40° high in the west two hours after sunset. Before this famous star pattern disappears, ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. If you’ve noticed a dazzling “star” low in the western sky ...