Launched in 1996-8, the Inmarsat-3s were built by Lockheed Martin Astro Space (now Lockheed Martin Missiles & Space) of the USA, responsible for the basic spacecraft, and the European Matra Marconi Space (now Astrium), which developed the communications payload.
Geostationary OrbitSTS-76 was NASA's 76th Space Shuttle mission, and the 16th mission for Atlantis. STS-76 launched on 22 March 1996 at 3:13 am EST (UTC −5) from Kennedy Space Center launch pad 39B. STS-76 lasted over 9 days, traveled about 3,800,000 miles (6,100,000 km) while orbiting Earth an estimated 145 times, and landing at 5:28 am PST (UTC −8) on 31 March 1996 at Edwards Air Force Base runway 22.
Low Earth OrbitPolar is one of four spacecraft in the Global Geospace Science (GGS) program. These are among the spacecraft (Wind, Geotail, SOHO, and Cluster) in the International Solar Terrestrial Physics (ISTP) program. POLAR measures solar wind entry, ionospheric output, and the depositions of energy into the neutral atmosphere at high latitudes.
Elliptical OrbitSoyuz TM-23 was the 25th mission and the 21st long-duration expedition to Mir space station. It was also a part of the US/Russian Shuttle-Mir Program. The mission began on February 21, 1996, 12:34:05 UTC, launching Commander Yuri Onufrienko and Flight Engineer Yury Usachov into orbit. They docked with Mir two days later. During their stay there, cosmonauts performed several EVAs and various scientific experiments. Station crew was visited by several Progress resupply spacecrafts, STS-76, and welcomed aboard Soyuz TM-24 with the next expedition crew. The mission concluded with a safe landing back on Earth on September 2, 1996, 07:41:40 UTC.
Low Earth Orbit