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

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

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, ...

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 ...

A bright light seen across several western states on May 16 sparked speculation on social media. The light, observed in Arizona, New Mexico, Colorado, Utah, and Montana, was likely from a Chinese ...