Looking for a sky event this week? Check out our full Sky This Week column. December 3: The Moon again blots out the Pleiades The Moon reaches perigee, the closest point to Earth in its orbit, at 6:07 ...

Looking for a sky event this week? Check out our full Sky This Week column. November 4: Two shadows and a moon cross Jupiter The morning begins with Europa crossing Jupiter, following in Io’s ...

Looking for a sky event this week? Check out our full Sky This Week column. October 11: Io and Europa cross Jupiter Now that spooky season is upon us, let's chase some cosmic ghosts. Tonight we're ...

Looking for a sky event this week? Check out our full Sky This Week column. November 28: Saturn stands still Mercury comes to its stationary point at 10 A.M. EST, ending its retrograde path and ...