ScienceOlympiadSolarSystem - Xihe Wiki

Reference

http://soinc.org/solar_b
Soinc solar system sample tests
- 14-15 https://www.soinc.org/sites/default/files/uploaded_files/SOLAR_SYSTEM_ES_GUIDE_B15.pdf
- 17-18 https://www.soinc.org/sites/default/files/uploaded_files/082317_SS1718_AnnotatedExampleExam.pdf https://www.soinc.org/sites/default/files/uploaded_files/082317_SS1718_ExampleExam.pdf
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