Northern Sky: April 16 - 29

Deane Morrison is a science writer at the University of Minnesota. She authors the Minnesota Starwatch column, and contributes to WTIP bi-weekly on the Monday North Shore Morning program through "Northern Sky," where she shares what's happening with stars, planets and more.

In the second half of April, we get a visit from Mercury and also a full moon; look for Saturn and Mars rising before midnight; and the ancient Celtic holiday beginning at sundown April 30, also known as the Witches' Sabbath.

(Photo by Kabsik Park on Flickr)