The Echo 1 spacecraft was a 30.48 m diameter balloon of mylar polyester film 0.0127 mm thick. The spacecraft was designed as a passive communications reflector for transcontinental and intercontinental telephone (voice), radio, and television signals. It had 107.9 MHz beacon transmitters for telemetry purposes. These transmitters were powered by five nickel-cadmium batteries that were charged by 70 solar cells mounted on the balloon. Because of the large area-to-mass ratio of the spacecraft, data for the calculation of atmospheric density and solar pressure could be acquired. The spacecraft was also used to evaluate the technical feasibility of satellite triangulation during the latter portion of its life. Echo 1 failed during the coast period after launch, as the attitude control jets on the second stage failed and the spacecraft did not achieve orbit. Echo 1A was a successful relaunch.
American orbital launch vehicle. Commercial name for the military's Thor-Delta.
Maiden Flight of the Ariane 62 launch vehicle, carrying ten cubesats, two deployers, five experiments, and two reentry capsules.
Türksat 6A is Turkey's first domestically manufactured geostationary communications satellite. It is to reside in 42° East orbital slot, providing se…
A pair of satellites officially described as for cartographic surveying purposes, details TBD.
Fifth flight of the Firefly Alpha small sat launcher, carrying eight cubesats for NASA's ELaNa 43 (Educational Launch of a Nanosatellite) mission.
A batch of 20 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
The Advanced Land Observing Satellite-4 (ALOS-4) is a Japanese satellite designed to observe the Earth's surface using a phased array type L-band syn…
Chinese communication geostationary satellite for unknown purposes.
Second batch of satellites for a reconnaissance satellite constellation built by SpaceX and Northrop Grumman for the National Reconnaissance Office t…
A batch of 23 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
The Geostationary Operational Environmental Satellite-U (GOES-U) is the fourth of the next generation of geostationary weather satellites, known as t…