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 * American Association of Variable Star Observers:
  * 2015 http://www.aavso.org/science-olympiad-2015
  * 2014 http://www.aavso.org/science-olympiad-2014

 * NASA Mars overview https://solarsystem.nasa.gov/planets/mars
 * Mars Facts: Life, Water and Robots on the Red Planet https://www.space.com/47-mars-the-red-planet-fourth-planet-from-the-sun.html

Reference

ScienceOlympiadSolarSystem (last edited 2018-03-29 01:06:37 by frank)