|
|
|
|
|
Magnetic field mission ends NASA NEWS RELEASE Posted: January 20, 2006 NASA's Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) satellite recently ceased operations, bringing to a close a successful six-year mission. IMAGE was the premier producer of new discoveries on the structure and dynamics of the Earth's external magnetic field (magnetosphere) and its contents.
Prior to the launch of IMAGE, the energetic particles and electrically charged gas (plasma) surrounding the Earth were completely invisible to human observers. IMAGE enabled researchers to study the global structure and dynamics of the Earth's inner magnetosphere as it responded to energy from solar winds. "Nearly six years of imagery by the pioneering cameras on IMAGE revolutionized our understanding of geospace and our knowledge of its space weather," said James Burch, IMAGE principal investigator at the Southwest Research Institute, San Antonio. IMAGE was launched on March 25, 2000. It successfully completed its two-year primary mission and continued providing data into December 2005, when it stopped responding to commands from ground controllers. Preliminary analysis indicated the craft's power supply subsystems failed, rendering it lifeless. The satellite is in an extended elliptical orbit and poses no threat to the planet. IMAGE discoveries have been reported in more than 400 peer-reviewed publications. More than 20 Ph.D. theses were based on data from the mission. Science highlights include: Confirmations: plasma plume creation, post-midnight peak in storm plasmas, the neutral solar wind, terrestrial origin of geospace storm plasmas and continuous nature of magnetic reconnection. Discoveries: plasmaspheric shoulders and notches, proton auroras in unexpected places, surprisingly slow plasmasphere rotation, a hot oxygen geocorona and a secondary interstellar neutral atom stream. Resolutions: the source of kilometric continuum radiation, solar- wind and auroral intensity effects on ionospheric out flow and the relationship between proton and electron auroras during geospace storms. The IMAGE education and public outreach program received numerous awards for videos, books, primary and secondary school curricula, teacher training, museum exhibits, planetarium shows, student workbooks and web-based information. The extensive archival database generated by IMAGE promises to yield new discoveries and will support investigations by other spacecraft and ground-based observatories for many years. IMAGE was a Medium Explorer mission sponsored by NASA's Sun-Earth Connections Program and managed by NASA's Goddard Space Flight Center, Greenbelt, Md. The Southwest Research Institute conducts IMAGE science operations. James Burch is the mission principal Investigator, and Thomas Moore at Goddard is the Mission Scientist. |
|
|
|
 |
||||||||||||||||||||||
The New Horizons spacecraft begins a voyage across the solar system to explore Pluto and beyond with its successful launch January 19 aboard a Lockheed Martin Atlas 5 rocket from Cape Canaveral, Florida.
NASA's Stardust spacecraft returns samples of cometary dust to Earth with its safe landing in Utah on January 15.
NASA Administrator Mike Griffin and his deputy Shana Dale hold a news conference at Kennedy Space Center in the final hours of the countdown to the New Horizons launch. Questions from reporters ranged from the Pluto-bound mission, the agency's budget and the space shuttle program.
Space shuttle Columbia's mission in January 1990 sought to retrieve the Long Duration Exposure Facility -- a bus-size platform loaded with 57 experiments -- that had been put into orbit six years earlier. LDEF was supposed to be picked up within a year of its launch. But plans changed and then the Challenger accident occurred. Columbia's STS-32 crew got into space, deployed a Navy communications satellite, then fulfilled their LDEF recovery mission, carried out a host of medical tests and returned to Earth with a nighttime touchdown in the California desert. The crew presents this post-flight film of mission highlights.
This film looks at the highlights in NASA's history from its creation in the 1950s, through the glory days of the Mercury, Gemini and Apollo programs, birth of the space shuttle and the loss of Challenger, launch of Hubble and much more.
If at first you don't succeed, keep on trying. That is what the astronauts of space shuttle Endeavour's maiden voyage did in their difficult job of rescuing a wayward communications satellite. Spacewalkers were unable to retrieve the Intelsat 603 spacecraft, which had been stranded in a useless orbit, during multiple attempts using a special capture bar. So the crew changed course and staged the first-ever three-man spacewalk to grab the satellite by hand. The STS-49 astronauts describe the mission and narrate highlights in this post-flight presentation.