Skynet is a family of military satellites, now operated by Paradigm Secure Communications on behalf of the UK Ministry of Defence, which provide strategic communication services to the three branches…
The Sloan Digital Sky Survey or SDSS is a major multi-filter imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico, …
SMART-1 was the first European Lunar mission and a technology demonstrator of Deep Space Electric Propulsion. It was launched in October 2003, reached the moon observation orbit in 2005 and…
SMOS — the second Earth Explorer mission launched on November 2009 designed to measure Soil Moisture and Ocean Salinity. The Soil Moisture and Ocean Salinity Satellite (SMOS) is a part…
The Stratospheric Observatory for Infrared Astronomy (SOFIA) is a joint project of NASA and the German Aerospace Center ( DLR) to construct and maintain an airborne observatory. NASA awarded the…
The Solar and Heliospheric Observatory (SOHO) mission purpose is to study the Sun from a point of gravitational balance. The SOHO spacecraft has been built by a European industrial consortium…
SOHO is an ESA/NASA collaborative mission within ESA's `Solar Terrestrial Science Program' (STSP), and it is also part of ISTP (International Solar Terrestrial Physics Program). So far, SOHO represents the…
Solar Orbiter (SolO) is a planned Sun-observing satellite, under development by the European Space Agency (ESA). The main mission scenario is a launch by a NASA EELV or an Atlas…
Solar Orbiter (SolO) is a planned Sun-observing satellite, under development by the European Space Agency (ESA). The main mission scenario is a launch by an Atlas V from the Kennedy…
Synoptic Optical Long-term Investigations of the Sun (SOLIS) is a new synoptic facility for solar observations over a long time frame that is funded by the National Science Foundation (NSF)…
Soyuz is a family of expendable launch systems developed by OKB-1, and manufactured by TsSKB-Progress in Samara, Russia. The launch services are commercialised by the company Starsem. The Soyuz launch…
The Soyuz spacecraft (not to be mixed with the Soyuz rocket) is a series of spacecraft initially designed for the Soviet space programme by the Korolyov Design Bureau in the…