French and Canadian researchers observe a lonely, free-floating planet for the first time [fr]

French and Canadian researchers observe a free-floating planet for the first time

It is a world first: a planet has been observed roaming free of any fixed orbit. It is also the first time that a planet-sized stellar object has been found this close to our solar system.

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CFBDSIR2149 planet roaming freely in space (artistic impression)

Hawaii, France, Québec, Chile – This extraterrestrial discovery is the result of close collaboration between France and Canada. The data was collected by the Canada-France-Hawaii Telescope Legacy Survey (CFHLST) and the European Southern Observatory’s Very Large Telescope (ESO - VLT).

The data was analyzed by researchers at l’Université de Montréal and a number of French astronomers, including the project’s distinguished lead researcher, Philippe Delorme, from the Grenoble Observatory’s Astrophysics Laboratory.

The planet called CFBDSIR2149 has a methane-rich, inhospitable atmosphere with an average temperature of 400°C (750°F). Its diameter is ten times greater than the Earth’s, and it is four to seven times heavier than Jupiter, the heaviest planet in the solar system.

This breakthrough confirms theories of how stars are formed and could also confirm that this kind of object occurs much more frequently than was previously thought. However, it is still difficult to observe such dark objects, even when they are as close as this one: only 100 light-years away.

HAPPY BIRTHDAY!! This breakthrough is just in time to commemorate the fiftieth anniversary of the European Southern Observatory

An informative video on the European Southern Observatory website

More info about Université de Montréal and this project

Or in all European languages on the ESO website

Credit : Crédit: ESO/L. Calçada/P. Delorme/Nick Risinger ( Saito/VVV Consortium

Article created on November 14th, 2012

Last modified on 21/07/2016

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