IRrelevant Astronomy

Spaceship Spitzer: The Slowlian Web


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During a tense face-off with a sinister (but extremely slow-moving) alien race, Dr. Michelle shows IR-1 how scientists can determine what extrasolar planets are made of, even when the planets are too far away to see.
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IRrelevant AstronomyBy NASA's Spitzer Science Center / IPAC / NASA / Caltech