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TDRS Program Logo Location of TDRS as of March 2019 An unflown TDRS on display at the Steven F. Udvar-Hazy Center in Chantilly, Virginia.. The U.S. Tracking and Data Relay Satellite System (TDRSS, pronounced "T-driss") is a network of American communications satellites (each called a tracking and data relay satellite, TDRS) and ground stations used by NASA for space communications.
The United States Space Surveillance Network (SSN) detects, tracks, catalogs and identifies artificial objects orbiting Earth, e.g. active/inactive satellites, spent rocket bodies, or fragmentation debris. The system is the responsibility of United States Space Command and operated by the United States Space Force and its functions are:
The Space Tracking and Surveillance System (STSS; formerly SBIRS-Low) was a pair of satellites developed by the United States Missile Defense Agency (MDA) to research the space-based detection and tracking of ballistic missiles. Data from STSS satellites could allow interceptors to engage incoming missiles earlier in flight than would be ...
Time can appear to move faster or slower to us relative to others in a different part of space-time. That means astronauts on the International Space Station age slower than people on Earth.
SEA Underground. The SEA Underground, formerly called the Satellite Transit System (STS), is an automated people mover (APM) system operating in the Seattle–Tacoma International Airport in SeaTac, Washington, United States. Originally opening in 1973, the SEA Underground is one of the oldest airport people mover systems in the world.
The West Sitcum Terminal is a 137-acre marine-cargo terminal on Commencement Bay operated by the Port of Tacoma and SSA Terminals, LLC. On 12.6 acres of the terminal, commonly referred to as ...
The Satellite Control Network (SCN), operated by the United States Space Force 's Space Delta 6, provides support for the operation, control, and maintenance of a variety of United States Department of Defense and some non-DoD satellites. This involves continual execution of Telemetry, Tracking, and Commanding (TT&C) operations.
A tracking and data relay satellite (TDRS) is a type of communications satellite that forms part of the Tracking and Data Relay Satellite System (TDRSS) used by NASA and other United States government agencies for communications to and from independent "User Platforms" such as satellites, balloons, aircraft, the International Space Station, and ...