Submission + - Cosmic ray intensity reaches its highest levels in (popsci.com.au)
An anonymous reader writes: A NASA probe found that cosmic ray intensities in 2009 had increased by almost 20 percent beyond anything seen in the past 50 years. Such cosmic rays arise from distant supernova explosions and consist mostly of protons and heavier subatomic particles — just one cosmic ray could disable unlucky satellites or even put a mission to Mars in jeopardy. http://www.popsci.com.au/node/38966