PMFORUM Breaking News
Breaking News in the Project Management World
Thursday, May 08, 2008
Cassini Program Duration Extended
NASA has announced that the duration of the international Cassini-Huygens mission has been extended by two years. The historic spacecraft's stunning discoveries and images have revolutionized mankind's knowledge of Saturn and its moons. Cassini's mission originally had been scheduled to end in July 2008.
The newly-announced two-year extension will include 60 additional orbits of Saturn and more flybys of its exotic moons. These will include 26 flybys of Titan, seven of Enceladus, and one each of Dione, Rhea and Helene. The extension also includes studies of Saturn's rings, its complex magnetosphere, and the planet itself.
"This extension is not only exciting for the science community, but for the world to continue to share in unlocking Saturn's secrets," said Jim Green, director, Planetary Science Division, NASA Headquarters, Washington. "New discoveries are the hallmarks of its success, along with the breathtaking images beamed back to Earth that are simply mesmerizing."
"The spacecraft is performing exceptionally well and the team is highly motivated, so we're excited at the prospect of another two years," said Bob Mitchell, Cassini program manager at NASA's Jet Propulsion Laboratory in Pasadena, Calif.
Based on findings from Cassini, scientists think liquid water may be just beneath the surface of Saturn's moon, Enceladus. That's why the small moon, only one-tenth the size of Titan and one-seventh the size of Earth's moon, is one of the highest-priority targets for the extended mission. Cassini discovered geysers of water-ice jetting from the Enceladus' surface. The geysers, which shoot out at a distance three times the diameter of Enceladus, feed particles into Saturn's most expansive ring. In the extended mission, the spacecraft may come as close as 15 miles from the moon's surface.
Cassini's observations of Saturn's largest moon, Titan, have given scientists a glimpse of what Earth might have been like before life evolved. They now believe Titan possesses many parallels to Earth, including lakes, rivers, channels, dunes, rain, snow, clouds, mountains and possibly volcanoes.
"When we designed the original tour, we really did not know what we would find, especially at Enceladus and Titan," said Dennis Matson, the JPL Cassini project scientist. "This extended tour is responding to these new discoveries and giving us a chance to look for more."
Unlike Earth, Titan's lakes, rivers and rain are composed of methane and ethane, and temperatures reach a chilly minus 290 degrees Fahrenheit. Although Titan's dense atmosphere limits viewing the surface, Cassini's high-resolution radar coverage and imaging by the infrared spectrometer have given scientists a better look. Other activities for Cassini scientists will include monitoring seasons on Titan and Saturn, observing unique ring events, such as the 2009 equinox when the sun will be in the plane of the rings, and exploring new places within Saturn's magnetosphere.
Cassini has returned a daily stream of data from Saturn's system for almost four years. Its travel scrapbook includes nearly 140,000 images and information gathered during 62 revolutions around Saturn, 43 flybys of Titan and 12 close flybys of the icy moons. More than 10 years after launch and almost four years after entering into orbit around Saturn, Cassini is a healthy and robust spacecraft.
Cassini launched Oct. 15, 1997, from Cape Canaveral, Florida, on a seven-year journey to Saturn, traversing 2.2 billion miles. It is one of the most scientifically capable spacecraft ever launched, with a record 12 instruments on the orbiter and six more instruments on the European Space Agency's Huygens probe, which piggybacked a ride to Titan on Cassini. Cassini receives electrical power from three radioisotope thermoelectric generators, which generate electricity from heat produced by the natural decay of plutonium. The spacecraft was captured into Saturn orbit in June 2004 and immediately began returning data to Earth.
The Cassini-Huygens mission is a cooperative project between NASA, the European Space Agency and the Italian Space Agency. For more information on the Cassini-Huygens mission, visit http://www.nasa.gov/cassini.
Created in 1958, the National Aeronautics and Space Administration (NASA) is America’s focal point for research, development and exploration of outer space. In 2005, the US President and Congress committed the United States to exploring the solar system and beyond: completing assembly of the International Space Station, flying the new Crew Exploration Vehicle no later than 2014, returning astronauts to the moon by the end of the next decade, and sending human missions to Mars and beyond. For over 50 years, NASA has been leading the world in the development and usage of advanced program and project management. Additional information about NASA can be found at www.nasa.gov. To learn more about NASA's space exploration plans, visit: www.nasa.gov/exploration.
The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. ESA is an international organisation with 17 Member States. By coordinating the financial and intellectual resources of its members, it can undertake programmes and activities far beyond the scope of any single European country. ESA’s job is to draw up the European space programme and carry it through. ESA's programmes are designed to find out more about Earth, its immediate space environment, our Solar System and the Universe, to develop satellite-based technologies and services, and to promote European industries. ESA also works closely with space organisations outside Europe. For additional information, visit http://www.esa.int/esaCP/index.html.
The Italian Space Agency (Agenzi Spaziale Italiana - ASI) was created in 1988 to coordinate Italy’s efforts and investments in the space sector. Since then ASI has become a significant player in space science, satellite technologies and the development of mobile systems for exploring the Universe. Today, ASI has a key role at the European level where Italy is the third contributor country to the ESA. At the international level, ASI has a close working relationship with NASA, and is a participant in the construction of the International Space Station. ASI has contributed to space exploration by building scientific instruments that are aboard NASA and ESA probes bound for Mars, Jupiter and Saturn. ASI is also in the forefront of studying Earth from space, to predict and prevent environmental disasters, ensure rapid intervention in crisis-stricken areas and measure the effects of climate change. For more information about ASI, visit http://www.asi.it/SiteEN/Default.aspx.
The newly-announced two-year extension will include 60 additional orbits of Saturn and more flybys of its exotic moons. These will include 26 flybys of Titan, seven of Enceladus, and one each of Dione, Rhea and Helene. The extension also includes studies of Saturn's rings, its complex magnetosphere, and the planet itself.
"The spacecraft is performing exceptionally well and the team is highly motivated, so we're excited at the prospect of another two years," said Bob Mitchell, Cassini program manager at NASA's Jet Propulsion Laboratory in Pasadena, Calif.
Based on findings from Cassini, scientists think liquid water may be just beneath the surface of Saturn's moon, Enceladus. That's why the small moon, only one-tenth the size of Titan and one-seventh the size of Earth's moon, is one of the highest-priority targets for the extended mission. Cassini discovered geysers of water-ice jetting from the Enceladus' surface. The geysers, which shoot out at a distance three times the diameter of Enceladus, feed particles into Saturn's most expansive ring. In the extended mission, the spacecraft may come as close as 15 miles from the moon's surface.
Cassini's observations of Saturn's largest moon, Titan, have given scientists a glimpse of what Earth might have been like before life evolved. They now believe Titan possesses many parallels to Earth, including lakes, rivers, channels, dunes, rain, snow, clouds, mountains and possibly volcanoes.
"When we designed the original tour, we really did not know what we would find, especially at Enceladus and Titan," said Dennis Matson, the JPL Cassini project scientist. "This extended tour is responding to these new discoveries and giving us a chance to look for more."
Unlike Earth, Titan's lakes, rivers and rain are composed of methane and ethane, and temperatures reach a chilly minus 290 degrees Fahrenheit. Although Titan's dense atmosphere limits viewing the surface, Cassini's high-resolution radar coverage and imaging by the infrared spectrometer have given scientists a better look. Other activities for Cassini scientists will include monitoring seasons on Titan and Saturn, observing unique ring events, such as the 2009 equinox when the sun will be in the plane of the rings, and exploring new places within Saturn's magnetosphere.
Cassini launched Oct. 15, 1997, from Cape Canaveral, Florida, on a seven-year journey to Saturn, traversing 2.2 billion miles. It is one of the most scientifically capable spacecraft ever launched, with a record 12 instruments on the orbiter and six more instruments on the European Space Agency's Huygens probe, which piggybacked a ride to Titan on Cassini. Cassini receives electrical power from three radioisotope thermoelectric generators, which generate electricity from heat produced by the natural decay of plutonium. The spacecraft was captured into Saturn orbit in June 2004 and immediately began returning data to Earth.
The Cassini-Huygens mission is a cooperative project between NASA, the European Space Agency and the Italian Space Agency. For more information on the Cassini-Huygens mission, visit http://www.nasa.gov/cassini.
The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. ESA is an international organisation with 17 Member States. By coordinating the financial and intellectual resources of its members, it can undertake programmes and activities far beyond the scope of any single European country. ESA’s job is to draw up the European space programme and carry it through. ESA's programmes are designed to find out more about Earth, its immediate space environment, our Solar System and the Universe, to develop satellite-based technologies and services, and to promote European industries. ESA also works closely with space organisations outside Europe. For additional information, visit http://www.esa.int/esaCP/index.html.
