... A Darkened Sky . ... Credit Copyright: Miloslav Druckmuller (Brno University of Technology), Peter Aniol, Vojtech Rusin Explanation: For a moment on August 1st, the daytime sky grew dark along the path of a total solar eclipse . ... On the left is bright planet Mercury , but many stars are also visible, including the Praesepae star cluster (also known as M44 or the Beehive cluster ) in Cancer, above and to the right of the silhouetted Moon. ... NASA Web Site Statements, Warnings, and Disclaimers . ...