NASA's Spitzer Space Telescope has uncovered the darkest cloud of interstellar dust and gas ever seen; it is so dense that even background infrared radiation is blocked, casting an ominous interstellar shadow. Continue reading
NASA's Spitzer Space Telescope has uncovered the darkest cloud of interstellar dust and gas ever seen; it is so dense that even background infrared radiation is blocked, casting an ominous interstellar shadow. Continue reading
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