November 13, 2008 - NewScientist
Astronomers have snapped what they say is the best photographic evidence yet of planets orbiting other stars. Two new planetary systems have been imaged in the Milky Way; one offers the first glimpse of a system with multiple planets.
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Christian Marois of the Herzberg Institute of Astrophysics in Victoria, Canada, and colleagues found a system with three planets in an ongoing survey of 80 young stars surrounded by relatively large amounts of dust.
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The planets, which formed some 60 million years ago, are still glowing with heat from their contraction. Their march across the sky with the star, as well as their counter-clockwise orbit around it, were measured in near-infrared images taken with the Keck and Gemini North telescopes in Hawaii.
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