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Published on 1 December 2007

Launch of an astrobiological experiment on Columbus

The space shuttle Atlantis, launched on 7 February 2008, from NASA’s Kennedy Space Center in Cape Canaveral, carries the European science module...
Published on 1 December 2007

Formation of cold filaments in cooling flow clusters

How hot gas in galaxy clusters (with temperature higher than 100 millions degrees) may cool and flow towards the cluster center in order to feed the...
Published on 1 November 2007

COROT: 300 days in orbit

CoRoT celebrates its 300 days in orbit, since its launch on december 27th from Baïkonour. It started to collect scientific data on the February 2nd, and...
Published on 1 November 2007

Rare White dwarf stars with carbon atmospheres

A team of astronomers, including a researcher from Paris Observatory, have discovered white dwarf stars with nearly pure carbon atmospheres. The...
Published on 1 November 2007

Stubborn nebulae — Fossil magnetic fields protect Helium 3 in dying stars

Some rare planetary nebulae, like NGC 3242 and J 320, preserve the helium 3 that they produced when they were young, while the majority of stars destroy...
Published on 1 November 2007

The puzzle of the variable radio period of Saturn

The auroral radio emission of giant planets are usually used to estimate their rate of internal rotation. But in the case of Saturn, these emissions...
Published on 1 November 2007

First results from Venus Express

The first scientific results of the ESA Venus Express mission are published (Nature, November 29, 2007). The spacecraft is in polar orbit around Venus since...
Published on 1 October 2007

What happened to 17P/Holmes?

On 24 October, 2007, the brightness of comet 17P/Holmes suddenly increased by a factor of one million. Observations made at the Pic-du-Midi observatory and...
Published on 1 September 2007

Strong seasonal temperature variations in Neptune’s atmosphere

For the first time, astrophysicists from JPL and CASS, California, and LESIA, Observatoire de Paris, have made resolved maps of the temperature on Neptune....
Published on 1 September 2007

The asymmetry of the Li lines casts doubt on previous determinations of the isotopic ratio 6Li/7Li

A team of astronomers, led by a scientist from Paris Observatory, puts back into question all isotopic measurements involving 6Li and 7Li up to now, since...