Astronomy Picture of the Day . A Galactic Mushroom Cloud . ... The Orion Nebula from Subaru . ... Some stars in the Trapezium, an open cluster of stars at the center, are only visible in infrared light. ... The picture is actually composed from two images recorded weeks apart by the Voyager 2 spacecraft during its visit to the Saturnian System in August of 1981. ... A premier high resolution view, this startlingly beautiful picture covers a 4x4 degree region around the galactic center. ...