Cluster is an magnetospheric research project, consisting of a constellation of four identical satellites. Part of the first Cornerstone Mission in the European Space Agency's long-term space science programme, the Cluster II satellites were built to replace the original Cluster mission, which was aborted after Ariane-5G's maiden flight in June 1996 failed to launch the satellites. The mission's objective is to research the Earth's magnetosphere and its interaction with the solar winds, via four identical satellites flying in formation which take simultaneous measurements to provide the most detailed three-dimensional study of changes and processes taking place in near-Earth space. The four satellites were launched in 2000 on two Soyuz-U Fregat rockets.
A Russian orbital launch vehicle. A version of the Soyuz-U with safety modifications to prevent and resist fires in all stages and the upper stage avionics compartment.
Progress Rocket Space Centre, formerly known as TsSKB-Progress, is a space science and aerospace research company which is known for manufacturing launch vehicles and satellites. Most notably, Progress Rocket Space Centre is the manufacturer of Soyuz launch vehicles.
INFO WIKIYesterday, on 31 August 2026, Samba reentered Earth’s atmosphere at 21:39:38 UTC / 23:39:38 CEST as the third of the four Cluster satellites. Samba had been lined up for a special 'targeted reentry' safely over the South Pacific Ocean, the…
The final two of ESA's pioneering Cluster spacecraft, Samba and Tango, will end their journeys as they burn up in our atmosphere on 31 August and 1 September respectively. Their targeted reentries mark the end of a mission that has transfo…
Paris, France (SPX) Feb 04, 2026 When satellites fall back to Earth, most of their structure burns up in the atmosphere, but engineers still lack detailed data on how real spacecraft actually break apart during reentry and which compo…
The first satellite in ESA’s Cluster quartet safely came back down to Earth last night in a world-first ‘targeted reentry’, marking a brilliant end to this remarkable mission.
The European Space Agency successfully deorbited the first of four Cluster space science satellites Sept. 8, performing a first-of-its-kind “targeted reentry” over the South Pacific.
Share-ride of 9 commercial Earth observation and technology demonstration satellites to SSO, details TBD.
A batch of 27 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
4 X-band synthetic-aperture radar Earth observation satellites for the Chinese Earth observation satellite company PIESAT.
Synthetic aperture radar satellite for Japanese Earth imaging company Synspective.
Note: Satellite serial number and Cosmos designation not confirmed. Glonass-K are the third generation of satellite design for GLONASS satellite n…
2 Earth observation radar satellites built by the Chinese satellite manufacturer SpaceTY.
USSF-259 is a classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites based on SpaceX’s Starshield …
A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…
Progress resupply mission to the International Space Station.
9 Low Earth Orbit communication satellites with Ku, Q and V band payloads for the G60 constellation operated by Shanghai Spacesail Technologies with …