Voyager explores new territory as new project manager steps on

Nov 01, 2010 By Jia-Rui Cook
Artist concept of NASA's Voyager spacecraft. Image credit: NASA/JPL

As NASA's two Voyager spacecraft hurtle towards the edge of our solar system, a new project manager will shepherd the spacecraft into this unexplored territory: Suzanne Dodd, whose first job at NASA's Jet Propulsion Laboratory in Pasadena, Calif., involved sequencing science and engineering commands for Voyager 1 and 2 in 1984.

"I'm thrilled to re-join a pioneering mission that set up adventures for so many other to follow," Dodd said. "There will be more firsts to come as we gather unique data once the spacecraft reach . There isn't a single mission currently on the books that will be doing what Voyager is doing."

The , launched on Aug. 20, 1977, is about 14 billion kilometers (9 billion miles) away from the sun. It is the longest continuously operating spacecraft. The , launched on Sept. 5, 1977, is about 17 billion kilometers (11 billion miles) away from the sun. It is the most distant active spacecraft.

In four to six years, Voyager 1 is expected to cross beyond the heliosheath, the outer layer of the bubble around our solar system that is composed of ionized atoms streaming outward from our sun. Voyager 2 is expected to cross that boundary several years later. Once beyond our heliosheath, the two will begin exploring the , which fills the space between stars.

When Dodd started on Voyager, Voyager 2 was on its way to Uranus. She stayed with the mission until Voyager 2 completed its closest approach to Neptune. No other spacecraft have visited these two outer planets.

Dodd still keeps a rolled-up sheet of vellum in her cabinet that shows the timeline of commands communicated to the spacecraft during its closest approach to Neptune on Aug. 25, 1989. The encounter with our seventh planet revealed the Great Dark Spot, a giant storm roiling Neptune's atmosphere, and geysers erupting from pinkish-hued nitrogen ice that forms the polar cap of Neptune's moon Triton.

After leaving Voyager in October 1989, Dodd moved on to other JPL projects, including NASA's Cassini mission to Saturn. She left JPL in 1999 to work at the Spitzer Science Center, which processes data from NASA's Spitzer Space Telescope, and, later, the Infrared Processing and Analysis Center, which archives infrared astronomy data from many sources. Dodd eventually managed both those centers, which are based at the California Institute of Technology in Pasadena.

"Coming back to Voyager is like re-learning a language you knew as a kid, but never spoke as an adult," said Dodd. "I'm excited to be immersed in the details again."

Dodd was also recently named the Spitzer Space Telescope's new project manager.

Dodd says the main challenge with Voyager now is to work within the boundaries of the spacecrafts' limited resources to make sure they collect the long-anticipated interstellar data. For example, Voyager's radioisotope power generators, which use heat from the decay of plutonium to produce electricity, have enabled the spacecraft to operate for this extended period of time, so far away from the sun. But the power, as expected, decays over time. While supplies are expected to last through 2020, Dodd and the operations team will eventually have to turn off some instruments to manage the power resources.

"My job is to make sure the two spacecraft stay healthy and mobile," she said.

Dodd is a native of Gig Harbor, Wash., a town outside of Tacoma. She graduated with a bachelors of arts degree in math from Whitman College in Walla Walla, Wash., and a bachelors of science degree in mechanical engineering from Caltech. She also holds a masters degree in aerospace engineering from the University of Southern California in Los Angeles.

Nine Voyager project managers preceded Dodd: H.M. "Bud" Schurmeier (1972-76), John Casani (1976-77), Robert Parks (1978-79), Raymond Heacock (1979-81), Esker Davis (1981-82), Richard Laeser (1982-86), Norman Haynes (1987-89), George Textor (1989-97) and Ed Massey (1998 to 2010). Edward C. Stone is the Voyager project scientist.

Explore further: Packing for Mars

add to favorites email to friend print save as pdf

Related Stories

Engineers Diagnosing Voyager 2 Data System (Update)

May 18, 2010

(PhysOrg.com) -- One flip of a bit in the memory of an onboard computer appears to have caused the change in the science data pattern returning from Voyager 2, engineers at NASA's Jet Propulsion Laboratory ...

Voyager Spacecraft Mark Thirty Years of Flight

Aug 20, 2007

NASA's two venerable Voyager spacecraft are celebrating three decades of flight as they head toward interstellar space. Their ongoing odysseys mark an unprecedented and historic accomplishment.

Voyager Celebrates 20-Year-Old Valentine to Solar System

Feb 15, 2010

(PhysOrg.com) -- Twenty years ago on February 14, NASA's Voyager 1 spacecraft had sailed beyond the outermost planet in our solar system and turned its camera inward to snap a series of final images that would ...

Recommended for you

Packing for Mars

33 minutes ago

Like surgeons in an operating room, the technicians work gowned and masked in ESA's ultraclean microbiology laboratory, ensuring a high-tech sensor will not contaminate the Red Planet with terrestrial microbes.

Historical comet-landing site is looking for a name

2 hours ago

The Rosetta mission reaches a defining moment on Wednesday November 12, when its lander, Philae, is released. After about seven hours of descent, Philae will arrive on the surface of Comet 67P Churyumov-Gerasimenko. ...

Image: Siding Spring grazes Mars

3 hours ago

This excellent view of Mars seen together with Comet C/2013 A1 Siding Spring was captured by Scott Ferguson, Florida, USA, on 19 October 2014 on the morning that the enigmatic object made the closest-known ...

China to send orbiter to moon and back

6 hours ago

China will launch its latest lunar orbiter in the coming days, state media said Wednesday, in its first attempt to send a spacecraft around the moon and back to Earth.

NASA Webb's heart survives deep freeze test

16 hours ago

After 116 days of being subjected to extremely frigid temperatures like that in space, the heart of the James Webb Space Telescope, the Integrated Science Instrument Module (ISIM) and its sensitive instruments, ...

User comments : 0