On this day: December 6

POSTED: 09:00 PM PST Dec 05, 2012    UPDATED: 11:00 PM PST Dec 05, 2012 

Harriet Tubman escapes slavery, the capstone is set on the Washington Monument, the TV special "Rudolph the Red-Nosed Reindeer" debuts, and Roy Orbison passes away, all on this day.

OTD December 6 - water on Mars
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NASA

2006: NASA reveals photographs taken by Mars Global Surveyor suggesting the presence of liquid water on Mars.

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