Explanation: When Mars Surveyor arrives at Mars in 2002, it will carry a sundial. Even though batteries and a solar array will power the Mars Surveyor Lander, the sundial has been included to allow a prominent public display of time. The sundial idea was the brainchild of Bill Nye the Science Guy, who noticed that a post originally used for camera calibration could be redesigned. Millennia ago, sundials were state-of-the-art timekeepers for humans on Earth. Since the Sun casts similar shadows on Mars and Earth, accurate calibration of the shadow placement on the Martian Sundial will tell a curious inspector of returned images both the time of day and the season.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: Mars - Sun - time - Mars - vremya Publikacii so slovami: Mars - Sun - time - Mars - vremya
Sm. takzhe: Mesto posadki "Ares-3" Smotrya v storonu s solnechnogo zonda "Parker" Ten' povrezhdennoi lopasti vinta "Indzhen'yuiti" Okruzhaya Solnce Solnechnyi minimum protiv solnechnogo maksimuma Kosmicheskaya stanciya, protuberancy i Solnce Marsianskii pylevoi smerch prohodit mimo Vse publikacii na tu zhe temu >>