... W5: Pillars of Star Formation . ... How do stars form? A study of star forming region W5 by the sun-orbiting Spitzer Space Telescope provides clear clues by recording that massive stars near the center of empty cavities are older than stars near the edges. ... A Colorful Side of the Moon . ... At left, the lovely Pleiades star cluster is about 400 light-years away. ... Within the nebula, bright edges and dark shapes are highlighted in this colorful skyscape. Orange Sun Scintillating . ...