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Mini-planet Systems Get Stranger
A brown dwarf companion (bottom left) was also surrounded by a disc
Discs of gas and dust, the ingredients needed to create such systems, have been seen circling these relatively small objects, dubbed "planemos". If the discs were capable of evolving larger aggregations of material, it would blur the definition of the word "planet", scientists said. The work was presented at the American Astronomical Society meeting in Canada. Cosmic newborns The study is based on observations from European Southern Observatory (ESO) telescopes. It looked at many recently identified planemos (an unofficial term sometimes used to describe planetary mass objects). Located about 450 light-years away in a star-forming region, four of the objects are just a few million years old, making them cosmic "newborns". They have masses between five and 15 times that of Jupiter. Posted by: Aron Source |
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