dimanche 12 août 2018

La NASA et la sonde solaire


Alors que les nationalistes blancs se regroupent près de la Maison Blanche je préfère me concentrer sur cette initiative de la NASA. Un projet fascinant qui pourrait avoir des retombées importante pour la vie sur terre.

 "The sun exploded again in July 2012, spewing material toward Earth at nearly 6 million miles per hour. This time the coronal mass ejection hit a NASA spacecraft called STEREO-A at full-blast. The spacecraft’s sensors were stressed, but they still managed to measure the solar particles, gusts of solar wind and the strength of the interplanetary magnetic field.

A year after the explosion, in a paper published in the journal Space Weather, astrophysicists examined the STEREO-A data to answer a worst-case question. “What if that coronal mass ejection had occurred 10 days earlier, when the Earth was in the line of fire?" said Daniel Baker, a professor of planetary and space physics at the University of Colorado at Boulder and one of the authors of the study.

Their conclusion: If it had hit Earth, Baker and his colleagues wrote, there was a “very legitimate question of whether our society would still be ‘picking up the pieces.’"

https://www.washingtonpost.com/news/speaking-of-science/wp/2018/08/09/this-nasa-spacecraft-is-about-to-probe-one-of-earths-scariest-threats-the-sun/?utm_term=.993e2a4f412c

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