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Image d'une planète dans un système triple

A team of astronomers have used the SPHERE instrument on ESO’s Very Large Telescope to image the first planet ever found in a wide orbit inside a triple-star system. The orbit of such a planet had been expected to be unstable, probably resulting in the planet being quickly ejected from the system. But somehow this one survives. This unexpected observation suggests that such systems may actually be more common than previously thought. The results will be published online in the journal Science on 7 July 2016.

A Surprising Planet with Three Suns. ESO,

GILSTER, Paul. Directly Imaged Planet in a Triple Star System. Centauri Dreams,

Chimie prébiotique sur Titan ?

If you’re looking for liquid water on Titan, prepare to go deep, perhaps as much as 100 kilometers below the Saturnian moon’s crust, which is itself made of ice. When it comes to exoplanets, we always talk about the habitable zone as a place where liquid water could exist on the surface. Titan clearly fails that test. But is it a place where life could exist anyway?

GILSTER, Paul. Prebiotic Chemistry on Titan?. Centauri Dreams,

La mort de Rémi Fraisse

Que s’est-il réellement passé dans la nuit du 25 au 26 octobre 2014, à Sivens (Tarn), lors de la mort de Rémi Fraisse ? À la lumière du dossier d’instruction et de nombreux témoignages, Reporterre révèle les faits. Ils contredisent la version officielle. Une équipe fantôme de gendarmes a agi cette nuit-là. Et n’avait pas pour seul but de défendre la zone.

SOUCHAY, Grégoire ; VLAHOVIC, Marine. Rémi Fraisse : il y avait une équipe fantôme. Reporterre,