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La moitié de cette exoplanète serait couverte de volcans futura-sciences.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from futura-sciences.com Daily Mail and Mail on Sunday newspapers.
Des chercheurs découvrent la première exoplanète à avoir une activité tectonique tomsguide.fr - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from tomsguide.fr Daily Mail and Mail on Sunday newspapers.
Astronomers have found a pretty weird binary system about 450 light years from Earth: Neither of its components is a star. Instead, one is a brown dwarf, and the other appears to be a planet orbiting it! Even then, the brown dwarf is on the lower end of things. If it were any less massive it would be a planet itself. The system is called CFHTWIR-Oph 98, but we ll call it Oph 98 for short. It was found a few years ago in ground-based observations using the Canada-France-Hawaii Telescope s infrared WIRCAM camera (hence the first part of the object s name) in a region of the galaxy where stars are being born which we see in the constellation of Ophiuchus (hence the second name part). It was observed in 2006 and 2012, and identified as a brown dwarf an object more massive than a planet but too lightweight to ignite sustained nuclear fusion in its core like a star. ....
Astronomers find two failed stars wandering the universe together Astronomers have discovered an exotic binary system consisting of two brown dwarfs orbiting each other. A team of researchers from the University of Bern has discovered a very different binary system 450 light-years from Earth. The system CFHTWIR-Oph 98 or Oph 98 for short has twin occupants that appeared at first sight to be exoplanets existing in a star-less system. A deeper examination has revealed that they are brown dwarfs Oph 98 A and Oph 98 B respectively astronomical objects that are similar to stars but smaller and cooler. This artist’s illustration represents a couple of planetary-mass brown dwarfs Ophiuchus 98. As they are very young, they are still evolving in the molecular clouds that saw their birth. (University of Bern, Illustration: Thibaut Roger) ....