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The "Planemo" Twins: Astronomers Discover Double Planetary Mass Object
This release describes the 2006 discovery of "an approximately seven-Jupiter-mass companion to an object that is itself only twice as hefty. Both objects have masses similar to those of extra-solar giant planets, but they are not in orbit around a star -- instead they appear to circle each other." Includes photos and links to releases related to these planetary mass objects (planemos). From the European Southern Observatory (ESO), an intergovernmental, European organization for astronomical research.
http://www.eso.org/public/outreach/press-rel/pr-2006/pr-29-06.html
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