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Science 24 February 2006:
Vol. 311. no. 5764, p. 1068
DOI: 10.1126/science.311.5764.1068n
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This Week in Science

The particles and magnetic fields that make up the solar wind buffet planetary ionospheres. Mendillo et al. (p. 1135) have recorded the instantaneous change in the ionosphere of Mars by catching a solar x-ray flare as it hit both Earth's ionosphere and then Mars's. The flare, which was spotted in data taken in 2001, was caught by radio instruments on the Mars Global Surveyor spacecraft in orbit around Mars and by terrestrial ionosonde stations and x-ray satellites. This tandem measurement allowed a direct comparison of the response of the planets' ionospheres to the perturbing event.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)