Instantaneous launch window.
The Molniya was a modification of the well-known R-7 Semyorka rocket and had four stages. The 8K78 resulted from a crash program by the Korolev Bureau to develop a booster for launching planetary probes. A larger third stage was added along with a fourth stage (Blok L) that was designed to fire in-orbit to send the payload out of LEO. The basic R-7 core was also structurally strengthened and given more powerful engines. A rushed development produced multiple malfunctions of the upper stages, which led to its being replaced by the improved Molniya-M in 1964, but there were enough 8K78s left to continue flying them into 1967.
When the Falcon 9 Block 5 rocket reaches Max-Q (maximum dynamic forces), the launch abort system of the Crew Dragon spacecraft will be triggered. ...
Eutelsat Konnect is an all-electric, Ka-band geostationary communications satellite built by Thales Alenia Space for Eutelsat. It will provide broa...
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A batch of 60 satellites for Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Shijian 20 is an experimental geostationary communications satellite. This is also a return-to-flight launch for Long March 5 after a July 2017 fai...
Gonets-M are an upgraded version of Gonets satellites, derived from military communications system Strela-3. Gonets-M constellation is tasked with...
Elektro-L is a series of meteorological satellites developed for the Russian Federal Space Agency by NPO Lavochkin. They are designed to capture re...
This is the first test flight of Starliner spacecraft to the International Space Station. Although Atlas V and Centaur upper stage successfully put...