Sisters of the Dusty Sky . ... Credit Copyright: John Davis Explanation: Hurtling through a cosmic dust cloud some 400 light-years away, the lovely Pleiades or Seven Sisters star cluster is well-known for its striking blue reflection nebulae . In the dusty sky toward the constellation Taurus and the Orion Arm of our Milky Way Galaxy, this remarkable image shows the famous star cluster at the upper left. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...