A timepiece that’s out of this world

Members of JPL’s Mars Exploration Rover mission are sporting a new power watch, but it’s no ordinary timepiece like a Rolex, a Breitling, or a Patek Philippe. This wristwatch follows Martian time.

On Mars, one solar day is roughly 39 minutes longer than it is on Earth. That means the Mars watch, true to the planet’s longer day, runs 39 minutes slower than conventional Earth-based timekeepers.

The special watch was needed to keep track of the Martian sunrise because the Mars rovers Spirit and Opportunity run on solar power. In order to make use of every minute of Martian daylight, they need to follow the Martian sun.
JPL employees turned to Executive Jewelers, in Montrose, to see if a watchmaker could design a timepiece that could help them keep track of time on another planet.

Garo Anserlian, a master watchmaker and president of the company, says at first he thought the request was a joke. “A watch that loses 39 minutes a day?” Anserlian remembers wondering. But the JPL employees were serious, so he got to work and had a sample within a month.

“I used existing watches, ones that are mechanical and self-winding, and modified them so that they lose 39 minutes and 25 seconds every day,” he says. He uses Seikos, Citizens, and Orients for their reliability and relatively low cost.

The watches, which are not very practical here on Earth, have nevertheless piqued the interest of watch collectors and Mars buffs, he says. “They are buying them as collector’s pieces,” he says. “We number them, provide a certificate, and engrave the number on the back of the watch.” He says he is making only 1,000 of the novelty wristwatches.

Anserlian has since expanded his line to 20 models, including a ladies’ watch. Buyers can choose different base metals; options include a date and calendar display. The watch with an image of Mars on its face reads “Mars Local Solar Time.”

Prices start at about $200, and the costliest is the $500 presidential model, which Anserlian says he is sending to Governor Schwarzenegger and to President George W. Bush.

Anserlian is also making watches that keep Earth time but with a Mars face; these go for about $70. “Some people are even sending me old pocketwatches to convert them,” he says. Pictures of the watches, and an order form, are available at www.executivejewelers.com.

 

Explore Mars from your desktop

Anyone with an Internet connection can now see the Red Planet through the rovers’ eyes at the new MarsQuest Online interactive web-site, which extends the power of JPL’s Mars Exploration Rover Mission site to offer a more in-depth exploration experience. MarsQuest Online includes a full set of images from Spirit and Opportunity, along with daily updates. Viewers can see the most recent panoramic images, rocks, and soil investigated by the rovers; follow the twin robotic geologists as they navigate the planet’s surface; and perform 3-D virtual flyovers of prominent land features. Visit www.marsquestonline.org/mer.