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Last Call: General Dynamics Radio Sends Final Message from Cassini Spacecraft to Earth

When the Cassini spacecraft plunged into Saturn's atmosphere on September 15, it kept sending images to Earth.

SCOTTSDALE, Ariz., Sept. 15, 2017 /PRNewswire/ -- In 1997, engineers at General Dynamics designed and built a transponder, or radio, that would travel aboard the Cassini spacecraft, the nation's first full-scale mission to explore Saturn. After reaching Saturn, the Cassini mission was to last only four years. Almost twenty years after launch, the spacecraft crashed into Saturn's gaseous surface after sending millions of images, and textbooks worth of scientific data to Earth, helping reveal the secrets of Saturn's rings and moons. That information came to astrophysicists, chemists and others via the General Dynamics radio, built using the most advanced technology available at the time. It continuously transmitted information to Earth, a distance of more than 900 million miles, and with each radio call, travelling at the speed of light, taking 84 minutes to reach the ground. 

"The engineers who designed and built this radio never dreamed it would continue to tell the story of Saturn as it thrived in the harsh environment of space for more than 13-years," said Manny Mora, vice president and general manager of General Dynamics Mission Systems, Space and Intelligence Systems line of business. "We are proud to have been part of the NASA Cassini mission team, helping scientists learn that there are jets of water vapor coming from one of Saturn's 60 known moons, the mystical rings are actually made of dust, rocks and ice and Saturn experiences seasonal changes during its 30-year orbit around the Sun."

NASA's Cassini mission was a joint effort with the European Space Agency (ESA) and the Italian Space Agency (ISA) comprising two elements, NASA's Cassini orbiter and the ESA/ISA Huygens probe. Once the orbiter and the probe reached Saturn in 2004, the probe separated from the orbiter and began its mission to study Saturn's moon Titan. The Cassini spacecraft continued on to study Saturn, its rings and moons.

General Dynamics has been delivering transponders and other space electronics and communications devices to U.S. space agencies since 1956, two years before NASA was formed. The company's radios broadcast Neil Armstrong's first words from the Moon, are aboard both Voyager spacecraft still sending communications from the edge of interstellar space. General Dynamics' communication technologies and products are also sending scientists and mission control personnel information from Mars, including the rovers Spirit and Opportunity. The company also developed the satellite ground systems helping NASA conduct manned and unmanned space missions while supporting the nation's military and government agencies to collect, analyze and deliver actionable intelligence protecting the nation. 

Closer to Earth, General Dynamics supports the U.S. Geological Survey's Landsat 8 and 9 missions, helping scientists monitor the planet's fragile ecosystems, watch weather events and report wildfires and other surface and atmospheric events.

Upcoming missions incorporating General Dynamics space and ground system and operations include the James Web Space Telescope, Landsat 9, modernization of the U.S Air Force global positioning system and the Mars 2020 mission intended to start Earth's first off-planet colony.

The Space and Intelligence Systems part of General Dynamics Mission Systems is a leader in solving the nation's toughest space communications and technology challenges, from monitoring the Earth, to exploring our solar system and beyond.

For more information about General Dynamics Mission Systems, a business unit of General Dynamics (NYSE: GD), please visit gdmissionsystems.com and follow us on Twitter @GDMS and LinkedIn.

Editors' note:  More information about the Cassini Mission can be found at the Jet Propulsion Laboratory's Cassini website: https://saturn.jpl.nasa.gov/news/2892/cassini-10-years-at-saturn-top-10-discoveries/

General Dynamics (PRNewsFoto/General Dynamics) (PRNewsFoto/General Dynamics)


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SOURCE General Dynamics Mission Systems

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