2013
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The universal nature of stellar granulation unveiled
The CoRoT satellite has provided the first clear photometric signature of the granulation in stars other than the Sun. These observations have also revealed...
The most evolved red giants vibrate like the Sun
An international team of astronomers, led by scientists from the LESIA department of the Paris Observatory (Observatoire de Paris/CNRS/Université Paris...
One Thousand and One Planets
Much time has massed since the eighties when astronomers asked themselves (as did the ancient Greeks) if the Sun is the only star surrounded by planets. 25...
ALMA discovers an outflow of molecular gas in a nearby spiral galaxy
Every galaxy hosts in its nucleus a supermassive black hole, which becomes very luminous when it swallows some gas: it is called then an Active Galactic...
Jean Schneider, record keeper of the extrasolar planets
Since 1995, nearly 1000 extrasolar planets have been discovered. Their number increases more and more rapidly. It is essential to catalog them with all their...
Experimental proof of major influence of micron-sized dust particles on the interstellar gas
A French-Dutch team of astronomers, including a researcher from Kapteyn Astronomical Institute of the University of Groningen, and a team of Paris...
Black holes could form faster than we think
A group of astronomers at Paris Observatory has undertaken a detailed study on the black hole formation mechanism during supernova explosion. This study is...
The birth of a convective core in a young star modifies its magnetic field
Researchers from the Observatoire de Paris and of the Service d’Astrophysique-Laboratoire AIM du CEA-Irfu have just observed an unexpected change of...
An asteroid belt around a recyled pulsar ?
High precision times of arrival measurements on the recycled pulsar B1937+21 made with four different radiotelescopes (Arecibo, Effelsberg, Nançay and...
Chameleon pulsar takes astronomers by surprise
An international collaboration which includes French scientists from Université d’Orléans, CNRS, Observatoire de la Côte d’Azur, Observatoire de Lyon and...