Skip to content viewer section. ABSTRACT The Infrared Array Camera (IRAC) on the Spitzer Space Telescope is absolutely calibrated by comparing photometry of a set of A stars near the north ecliptic ...
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'Extreme' warming in the Arctic as North Pole temperatures swell 36 F above averageThe North Pole was above freezing on Sunday after an extreme winter warming event caused temperatures to climb more than 36 F ...
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