St. Louis Science Center: Astronomy Fact Of The Day: November 13, 2021

St. Louis MO

14 November, 2021

9:31 AM

Description

Press release from St. Louis Science Center: November 13, 2021 Today in 1971, Mariner-9, the first man-made object to orbit another planet, entered Martian orbit. The mission of the unmanned craft was to return photographs mapping 70% of the surface, and to study the planet's thin atmosphere, clouds, and hazes, together with its surface chemistry and seasonal changes. This press release was produced by St. Louis Science Center. The views expressed here are the author's own.