A Horsehead of a Different Color


horseheadofadifferentcolorhorsehead_cThe Hubble Space Telescope took the data used to make the photograph above of the iconic Horsehead Nebula. The nebula has been a staple image in astronomy books for a century or so. While it’s shadowy in visible light (at left), it appears transparent and ethereal when photographed at infrared wavelengths, popping out against a backdrop of stars and distant galaxies visible in infrared light.

Image Credit: NASA

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