SKY EVENT: CELESTIAL BLOSSOMS: TEST REPORT: Mars Brushes by the Pleiades Spring's Planetary Nebulae William Optics' Tiny Astrograph PAGE 46 PAGE 58 PAGE 66 THE ESSENTIAL GUIDE TO ASTRONOMY MARCH 2021 The Great Dimming of Betelgeuse Page 14 skyandtelescope.org How Did We Get the Asteroid Belt? Strange Variable Stars for Your Scope Backyard Treasures Around the Beehive Cluster Page 22 Page 30 Page 54http://www.skyandtelescope.org