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Nature 447, 155-156 (10 May 2007) | doi:10.1038/447155a; Published online 9 May 2007

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Extrasolar planets: Remote climes

Adam Burrows1

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A distant planet traversing its orbit shows variations in its infrared brightness, providing the first map of its climate. These variations paint a picture of a dynamic world, with efficient redistribution of stellar heat.

Here's a startling fact for those not up with the latest planetary news: we now know of more than 20 times as many planets outside our Solar System as in it. Most of these extrasolar planets are gas giants like Jupiter; almost all were discovered indirectly by the slight wobble they induce in the orbit of their bright primary star.

  1. Adam Burrows is in the Department of Astronomy, University of Arizona, Tucson, Arizona 85721, USA.
    Email: aburrows@as.arizona.edu

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