Looking for a sky event this week? Check out our full Sky This Week column. October 15: Double crater Messier Late this evening for much of the U.S., Saturn's small moon Tethys transits the ringed ...

McKim Observatory still houses many of its original instruments, including a 9.53 inch Clark Refractor telescope, a meridian transit telescope, and a gravity driven chronograph. Missing from the early ...

Looking for a sky event this week? Check out our full Sky This Week column. October 17: Watch Wild Ducks Tiny Tethys is transiting the disk of Saturn beginning around 9:35 P.M. EDT, most easily ...

On June 5th in North and Central America, and June 6th in Asia, Australia, and most of Europe, the planet Venus will cross in front of the Sun. This will be only the eighth such transit of Venus since ...