The regular dodecagon with side length 1 below is composed of six dark blue squares and 12 light blue equilateral triangles, all of which also have side length 1. Consequently, the star has the ...

In a dark sky, Spica will seem to suddenly "click off," a stunning demonstration of the moon's orbital motion and the star's tiny angular size. Comments (0) When you purchase through links on our ...

The star's reappearance will be spectacular wherever the moon is up in a dark sky. For any place west of a line running roughly from Sault Ste Marie, Ontario south to Mobile, Alabama, the sky will ...