A cosmic spider-shaped nebula hides in a dark corner of space. Astronomers looking toward the constellation Circinus with earth-based telescopes saw only a fuzzy, hourglass-shaped patch of light. But when they turned the dust-piercing, infrared light gathering NASA’s Spitzer Space Telescope at this spot in the sky, they discovered a nebula blooming with clusters of massive young stars. Astronomers called it the “Black Widow Nebula.”
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