Could Trip to Mars Cause Alzheimer's?
http://abcnews.go.com/Health/astronauts-alzheimers-mouse-study-shows-cosmic-radiation-disease/story?id=18104305
Space travel has always been portrayed as risky -- no air or water, extreme temperatures -- a place where even a small miscalculation can be fatal.
Comet ISON Could Outshine the Moon - If It Survives the Sun
http://technabob.com/blog/2013/01/01/comet-ison-could-outshine-moon/
Next year could be a very good year for watching comets. A comet was discovered this past September that is expected to fly within 1.2 million miles of the center of the Sun on November 28, 2013.
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