Watch subtle changes in these morphing images of the universe.
Photo captions by Tim Appenzeller
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Star Incubator Images by NASA/JPL/Caltech/Jeonghee Rho, Sirtif Science Center
Dark veins of dust crisscross the Trifid Nebula, a gas cloud 5,500 light-years from Earth, in a visible-light image (blue and pink). A composite infrared image from Spitzer penetrated the dust to reveal embryonic stars (red and yellow spots).