2007
Page 1 - results 1 to 10
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...