http://www.gizmag.com NASA has a warning for everyone planning a trip to Mars in the near future – it might be a good idea to wrap yourself in an extra layer of tinfoil when you travel According to sensors on NASA's ACE (Advanced Composition Explorer) spacecraft, galactic cosmic rays have just hit a Space Age high, reaching levels 19 percent higher than observed in the past 50 years and sparking a rethink on the radiation shielding needed for astronauts.en gizmag.com http://www.gizmag.com/nasa-cosmic-rays-warning/12983/#comment-8950 http://www.gizmag.com/nasa-cosmic-rays-warning/12983/#comment-8950 Wed, 30 Sep 2009 23:15:10 -0500