- 2012-06-02 : Fireball in the French sky
- 2011-12-29 : natural Earth satellites
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- 2011-10-27 : Faraway Eris is Pluto's Twin
- 2011-10-26 : A meteor captured by the new IMCCE camera
- 2011-10-11 : The Secrets of Asteroid Minerva and its Two Moons
- 2011-10-07 : 2011 Draconids
- 2011-08-31 : preparation for the coming Draconids meteor outburst
- 2011-06-26 : 2011 MD will pass extremely close by Earth on Monday June 27
- 2011-04-22 : The famous Cretaceous-Paleogene boundary older than we thought
- 2011-04-21 : Flighing over Pic du midi observatory
- 2011-04-14 : Creation of the African Astronomical Society
- 2011-03-17 : Giant Full Moon on March 19th
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- 2010-08-19 : 2010 Perseids
- 2010-07-11 : Lutetia as though you were there
- 2010-07-10 : Lutetia takes the Stage
- 2010-06-30 : A giant water ice shell under the surface of the asteroid (90) Antiope ?
- 2010-06-11 : The comet McNaught C/2009 R1
- 2010-06-04 : New impact detected on Jupiter
- 2010-05-26 : South African Astronomical Observatory Selected as Host for the IAU Office for Astronomy Development
- 2010-05-21 : The mystery of the disapperance of the south band of Jupiter
- 2010-03-26 : An avalanche of asteroids
- 2010-01-20 : Zoom on Near-Earth Asteroids
- 2010-01-18 : Asteroid 2867 Steins seen by Rosetta
- 2009-08-21 : Le calendrier musulman et le calcul des dates du mois de Ramadan
- 2009-06-17 : Solstice d'été
- 2009-05-27 : La direction de La Mecque grâce au Soleil
- 2009-04-22 : The solar wind is the cause of rapid ageing of the asteroids
- 2009-04-06 : To photograph the sunset on the Grand Canal in Versailles
- 2009-03-09 : Paris Astronomers "Catch" Passing Asteroid
- 2009-03-09 : Summer time
- 2009-03-09 : Spring equinox
- 2009-02-09 : Comète LULIN
- 2009-02-02 : Lever du Soleil dans l'axe de l'arche de l'Arc de Triomphe
- 2008-07-31 : Webcast from Novosibirsk of the total eclipse of the Sun on August 1, 2008
- 2008-07-17 : Calculation of the visibility of the first crescent of the Moon in August-September 2008
- 2008-07-17 : The sun under the Arc de Triomphe
- 2008-07-17 : To photograph the sunset on the Grand Canal in Versailles
- 2008-07-17 : Partial eclipse of the Moon on 2008, August 16th
- 2008-07-02 : Earth in aphelion on July 4th
- 2008-06-10 : Summer solstice on June 20th
- 2008-06-02 : Update of the lectures on relativity in celestial mechanics and astrometry.
- 2008-06-02 : Publication of the IMCCE scientific and technical Note S093
- 2008-05-05 : The sun under the Arc de Triomphe
- 2008-02-25 : To photograph the sunset on the Grand Canal in Versailles
- 2008-02-25 : Spring equinox
- 2008-02-25 : Summer time
- 2007-12-06 : 2008 Nautical Ephemerids
- 2007-12-06 : Publication of Guide de Données Astronomiques 2008 - Annuaire du Bureau des Longitudes
- 2007-12-06 : Agenda astronomique 2008
- 2007-12-04 : The Quadrantids
- 2007-12-04 : Earth at perihelion
- 2007-12-04 : Winter solstice
- 2007-10-02 : Clock change back to winter
- 2007-09-21 : Autumnal equinox
- 2007-07-25 : The sixtieth satellite of Saturn
- 2007-07-03 : Earth in aphelion on July 6th
- 2007-05-24 : Summer solstice on June 21th
- 2007-03-20 : To photograph the sunset on the Grand Canal in Versailles
- 2007-03-09 : A new triple asteroid discovered in the Main Belt
- 2007-02-26 : Lyrides as beginnings of meteor shower
- 2007-02-26 : Summer time
- 2007-02-26 : Spring equinox
- 2007-01-22 : New version of the ephemerides «Connaissance des Temps »
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An avalanche of asteroids
Publiée le 2010-03-26 |
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The spacecraft WISE (Wide-field Infrared Survey Explorer) launched in December 2009 projects since that date an infrared light on the darkest objects in the Solar System, Milky Way and the Universe. Among these brown dwarfs, clouds of dust and asteroids.
Hundreds of them, are discovered every day. They are so dark that they are almost undetectable from the ground. However, their very low temperature makes them very bright in the infrared. After only three months of operation, WISE has already identified a handful of potentially hazardous asteroids that cross Earth's orbit.
Project managers expect a final harvest of a hundred of these near-Earth asteroids by October 2010.
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