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Les vers survivants de Columbia



  1. #1
    vince

    Les vers survivants de Columbia


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    Je n'étais pas là ce week end alors je ne sais pas si l'info a été répercutée.

    Live worms from Columbia experiments found in shuttle wreckage
    By MIKE SCHNEIDER
    Associated Press

    CAPE CANAVERAL, Fla. - Hundreds of worms being used in a science experiment aboard the space shuttle Columbia have been found alive in the wreckage, NASA said today.

    The worms, known as C. elegans, were found in debris found in Texas several weeks ago. Technicians sorting through the debris at Kennedy Space Center in Florida didn't open the containers of worms and dead moss cells until this week.

    All seven astronauts were killed when the shuttle disintegrated over Texas on Feb. 1. Columbia contained almost 60 scientific investigations.

    "To my knowledge, these are the only live experiments that have been located and identified," said Bruce Buckingham, a NASA spokesman at the Kennedy Space Center.

    The worms and moss were in the same nine-pound locker located in the mid-deck of the space shuttle. The worms were placed in six canisters, each holding eight petri dishes.

    The worms, which are about the size of the tip of a pencil, were part of an experiment testing a new synthetic nutrient solution. The worms, which have a life cycle of between seven and 10 days, were four or five generations old, Buckingham said.

    The experiment was put together by researchers at the NASA Ames Research Center in California.

    The moss, known as Ceratodon, were used to study how a spaceflight environment influences cell growth. During Columbia's flight, shuttle commander Rick Husband sprayed the moss with a chemical that destroyed protein fiber. He also sprayed the moss with formaldehyde to preserve it. Seven of the eight aluminum canisters holding the moss were recovered.

    The experiment was put together by an Ames Research Center researcher and Dr. Fred Sack at Ohio State University.

    "The cells were surprisingly well-preserved, but we're analyzing how useful it's going to be," Sack said.

    Researchers said they don't know if the worms will still have any scientific value since they were supposed to have been examined and unloaded from Columbia within hours of landing

    "It's pretty astonishing to get the possibility of data after all that has happened," Sack said. "We never expected it. We expected a molten mass."
    sources

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    Dernière modification par piwi ; 02/03/2008 à 13h30.

  2. #2
    kinette

    Hello,
    Oui elle l'a été voir la nouvelle (en français ) sur Futura à cette adresse .
    Et n'hésitez pas à jeter un coup d'oeil régulièrement sur la rubrique actualités .
    Enfin si vous regardez en haut de votre page sur le forum y a un petit menu déroulant qui donne les dernières news enregstrées sur Futura...


    Voili,

    K.GV en retard...
    Nomina si nescis, perit et cognito rerum.

  3. #3
    vince

    Citation Envoyé par kinette
    K.GV en retard...
    Gnagnagnagna

    V (aïe, coups de soleil)

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