The Mars Polar Lander, also known as the Mars Surveyor '98 Lander, was a 290-kilogram robotic spacecraft lander launched by NASA on January 3, 1999 to study the soil and climate of Planum Australe, a region near the south pole on Mars. It formed part of the Mars Surveyor '98 mission. On December 3, 1999, however, after the descent phase was expected to be complete, the lander failed to reestablish communication with Earth. A post-mortem analysis determined the most likely cause of the mishap was premature termination of the engine firing prior to the lander touching the surface, causing it to strike the planet at a high velocity.
Delta II was an expendable launch system, originally designed and built by McDonnell Douglas. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000, and the two later Delta 7000 variants ("Light" and "Heavy"). The rocket flew its final mission ICESat-2 on 15 September 2018, earning the launch vehicle a streak of 100 successful missions in a row, with the last failure being GPS IIR-1 in 1997.
A batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Demonstration flight of the Long March 8A rocket with upgraded first stage and boosters engines, and a new larger liquid hydrogen/liquid oxygen secon…
A batch of 23 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Fourth batch of five satellites for the French Kinéis IoT constellation designed to operate with 25 nanosatellites of 30 kg each.
A batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Unidentified classified satellites for the Russian military.
WorldView Legion is a constellation of Earth observation satellites built and operated by Maxar. Constellation is planned to consist of 6 satellites …
NS-29 will simulate the Moon’s gravity and fly 30 payloads, all but one of which is focused on testing lunar-related technologies. The payloads wi…
A batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.