Here is a list with three objects per season which appear really large in the nighttime sky. ... At 5,000 light-years away, the star cluster at its center is magnitude 4.8, ...

Purgathofer-Weinberger 1, a faint planetary nebula about 1,300 light-years away, is the second-largest planetary nebula in ...

A Perseid meteor streaks across the sky above desert pine trees on Aug. 13, 2015, in the Spring Mountains National Recreation Area, Nevada. This year, the Southern Delta Aquariid meteor shower ...

Sky This Week is brought to you in part by Celestron. Friday, July 25Pluto reaches opposition at 3 A.M. EDT. Opposition is ...

A comet, now known as 3I/ATLAS, with 3I short for "third interstellar," sparked immediate excitement on July 1 when it was ...