Showers of stones on the COROT exoplanet-7b
A program used to simulate the volcanism on Io, a moon of Jupiter, the exoplanet rock recently discovered by COROT in orbit around a dwarf star in the constellation of the Unicorn is the seat of a strange phenomenon: there would rain of pebbles! "There are more things in heaven and on earth, Horatio, (more...)The Montparnasse Tower is also a particle detector
Impacts of meteorites reveal Martian ice
Taken in 2007 by the Hubble telescope, an image of the surface of the asteroid Pallas eventually talk. It reveals what planetary scientists have suspected for some time. Pallas is a protoplanet in the freezer, instructive relic of the early days of the formation of solar tendering system leads.
Alcor and Mizar are a binary system tripled
Long before its use by Galileo in a telescope, astronomers knew of such a binary system, the stars Alcor and Mizar. The couple has since ceased to multiply with increasing resolution instruments. Mizar has been double and quadruple. Latest episode dated: Alcor has in turn seen as a binary. Total: 6 stars!
The Messenger probe mapping Mercury
Launched in August 2004, the U.S. spacecraft Messenger has just completed his third overview of Mercury, allowing the realization of the first global map of the world’s least known of the solar system. Mercury is a terrestrial planet like the Earth. It is closest to the Sun (and therefore difficult to observe, just before sunrise [...]
UNESCO headquarters
2009 ends and with it the 09 WADA, the International Year of Astronomy, officially launched last January 15 at UNESCO headquarters in Paris. During one year Astro Blog received all the astronomical events: 12 months staring at the sky 12 months we have identified 12 times stronger.
Impacts of meteorites reveal Martian ice
Since the missions Viking 1970s, planetary scientists knew, without being sure, that the water had flowed in abundance on Mars and would still be under the surface as permafrost probably. This last statement was partly based on images of impact crater,
NASA has created a plume on the moon
Six months after the 100 hours of astronomy, here are the Galilean Nights: from October 23 to 25, you can make in astronomy clubs raised all over France to see the constellations of autumn, and 400 years According to Galileo, see the planet Jupiter and its satellites.
Enjoy the Galilean nights to discover the night sky
Six months after the 100 hours of astronomy, here are the Nights: from October 23 to 25, you can make in astronomy clubs raised all over France to see the constellations of autumn, and 400 years According to Galileo, see the planet Jupiter and its satellites. Animators and fans will be there to help you [...]
A new, organic matter detected in exoplanet
Since its discovery in 1999, the extrasolar planet HD 209458b, also known as Osiris, is in the eye of many instruments and many astronomers. It turns 150 years light of the Earth around a star similar to our Sun, the constellation of Pegasus (between Andromeda and Aquarius, a recognizable region four stars forming the
Our heliosphere is affected by the interstellar medium
Even among the stars, space is not empty. It is filled with gas, dust and cosmic rays. The interstellar medium is also a bit like the atmosphere and the magnetosphere of a planet to a galaxy with a complex chemistry, an electrodynamic and hydrodynamic rich and fascinating.
Scientific cosmology and philosophy can they talk
Philosophers do they need to know the cosmology and cosmologists can they benefit from discussions with philosophers? By introducing extra spatial dimensions, parallel worlds and speaking before a Big Bang, physicists do not transgress the bounds of science, or rather are they not trying to reach the issues raised and discussed for over two thousand [...]
10.2 billion light years, a record for a cluster of galaxies
According to the theory of cold dark matter, galaxies are the first structures emerged in the universe. Dwarf for the most part, they then began to merge and assemble to form clusters of galaxies, which have merged, leading to the filamentous structure of voids traversed immense that we observe today.
The Corot satellite will work three more years
Launched in December 2006, the instrument developed by CNES (Center National d’Etudes Spatiales), with ESA and other scientific partners in Europe, the COROT satellite (for Convection, Rotation & planetary Transits) mission had a double complex. It was brilliantly successful.
Known to recreate the environment of black holes
As has been pointed out recently at a conference on cosmology and philosophy at Lyon, the French mathematician and philosopher Auguste Comte believed that the composition and temperature of stars would be forever unknown to mankind. By what means might even just go to the Sun and with what might thermometer to measure temperature? he [...]
