Sundials - World's Oldest Clocks

North American Sundial Society

Two Worlds - One Sun

When spacecraft go to Mars and beyond, sometimes they carry a sundial.  The story of two worlds - one sun.

NASS_2004_TwoWorldsOneSunAt the 2004 NASS Conference in Tenafly, NJ, Fred Sawyer announced that the Sawyer Dialing Prize would go jointly to Bill Nye and Woodruff (Woody) Sullivan for their efforts to transform the Mars Rover Pancam calibration disk into a Martian sundial (with electronically placed hour lines) that could be viewed on the Internet.  The award was a foregone conclusion at the inception of the prize some years ago, but awaited the success of the Mars Rover landings in 2004. [Photo Credit: NASA/JPL/Cornell] http://athena.cornell.edu/kids/sundial.html

Unfortunately neither Bill nor Woody was able to attend the conference, but a descriptive paper by Bill was read explaining the corresponding Earth Dial project (“Two Worlds, One Sun”), showing similar styled dials in Utah, Honduras, Ohio, Virginia, Chile, Canada, the UK, Spain, and even the South Pole.  Download the PDF created by Nye Labs at revealing how to make a replica of the Mars Dial.

Read more: 2004 Prize - Bill Nye and Woodruff Sullivan

nass_news_2013_mar_EarthDialThe Planetary Society and Bill Nye, The Science Guy, are bringing back the Earth Dial, which is a simple to make gnomonic horizontal sundial reminiscent of the sundial incorporated into the Mars rovers Spirit, Opportunity and now Curiosity.  Their original and fundamental purpose is to serve as test patterns for the rover cameras, but they also provide an opportunity as unique shadow casting sundials.

“Since we had shadows being cast on Mars, I suggested it be a sundial… I admit I was quite enthusiastic about it. Steve Squyres, the Principle Investigator on the Spirit and Opportunity missions, made the call, and the Mars Dials were created. He received the [Planetary] Society’s Cosmos medal a few years ago, for his wonderful leadership of the project.”

Attachments:
Download this file (EarthDials-2013.pdf)Earth Dial Print Out Design-2013[Make your own Earth Dial with a dial drawn for your latitude (16 to 54 deg)]923 kB

Read more: Planetary Society Brings Back Earth Dial

nass_news_2012_oct_SundialToMarsBill Nye, The Science Guy gives a 7 minute TED-ED talk describing the excitement of creating sundials on Mars.  http://ed.ted.com/lessons/sending-a-sundial-to-mars-bill-nye

TED stands for Technology, Entertainment, and Design, a nonprofit organization devoted to spreading ideas of worth.  Conferences are held each year with more than 50 guest speakers to motivate the audience on many different fields and now through YouTube, you can share the excitement of sundialing.

Read more: TED Lecture - Sundials to Mars

nass_news_2012_aug_CuriosityWith the successful landing of the NASA rover Curiosity, another sundial is on planet Mars.  Turning the color calibration target into a sundial was the idea of Bill Nye, the Science Guy, and Professor Woodruff Sullivan at the University of Washington, originally hailed by “Two Worlds – One Sun”

Read more: Curiosity Carries Sundial

nass_news_2011_dec_CuriosityDial
[photo courtesy of NASA]

“Two Worlds One Sun” lives on as the Mars Science Lander called Curiosity makes its way to Mars, once again carrying a camera color calibration target that will be used as a sundial.  The original Mars sundial was the idea of Bill Nye, the Science Guy, and designed by Professor Woody Sullivan of University of Washington.

The spacecraft was launched toward Mars on 26 Nov 2011.  Onboard Curiosity the camera calibration sundial has four edges each containing a panel of text and image, written by Jim Bell, planetary scientist from Arizona State University and the Mars Exploration Rover team with graphics designed by artist Jon Lomberg. 

Read more: Curiosity Sundial Launched