Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter @sciencef1rst.
The team then divided the data into three-month periods to analyze cosmic ray counts over these periods, reducing the influence of sporadic solar events such as flares and coronal mass ejections.
The data from all three planets showed that cosmic ray detections declined as the sun's activity in Solar Cycle 24 reached its peak, which occurred around April 2014. However, the Red Planet data showed a nine-month lag between the maximum number of"Previous studies have suggested that there is a delay of several months between solar activity and the behavior of cosmic rays at the Earth and at Mars," Futaana said.
The data collected by Venus Express has been more challenging to analyze than data from Earth or Mars because the way data was processed aboard the spacecraft changed in 2010.
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