On this day: December 6

Published On: Dec 05 2012 11:00:14 PM CST   Updated On: Dec 06 2014 01:00:00 AM CST

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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