// ORBITAL LOGISTICS AND PROPULSION TERM
T-Minus
T-Minus refers to the time remaining before a scheduled event, most commonly a rocket launch. T-Minus 10 minutes means there are 10 minutes until launch.
TECHNICAL DEFINITION
T-Minus denotes the countdown sequence indicating the time remaining until a critical event, primarily a rocket launch or major mission milestone, where 'T' represents the time of the event itself.
BACKGROUND
Bigelow Aerospace was an American space design and manufacturing company which ceased operations in 2020. It was an aeronautics and outer space technology company which manufactured and developed expandable space station modules. Bigelow Aerospace was founded by Robert Bigelow in 1998, and was based in North Las Vegas, Nevada. It was funded in large part by the profit Bigelow gained through his ownership of the hotel chain Budget Suites of America.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Countdown
- Launch countdown
- Hold
- Go/No-Go
USAGE NOTE
The T-Minus sequence is meticulously managed with holds for final checks and adjustments.
DEVELOPERS
Organizations developing technology related to T-Minus.
Designs, manufactures, and launches advanced rockets and spacecraft. Known for its Falcon series rockets and Starship program, which are central to modern space launches and associated countdown procedures.
An aerospace manufacturer and spaceflight services company developing a range of rocket engines, orbital launch vehicles (New Glenn), and suborbital tourist platforms (New Shepard).
A joint venture of Lockheed Martin and Boeing that provides launch services to the U.S. government. Operates the Atlas V, Delta IV Heavy, and upcoming Vulcan Centaur rockets.
A European company that commercializes and operates a family of launch vehicles (Ariane, Vega) from the Guiana Space Centre, playing a key role in global satellite launches.
An American aerospace manufacturer and small satellite launch service provider. Known for its Electron rocket and is developing the larger Neutron launch vehicle.
The U.S. government agency responsible for the civilian space program, aeronautics, and aerospace research. Deeply involved in developing and managing space launch systems and missions, often in partnership with private industry.
A global aerospace and defense technology company that develops and manufactures launch vehicles (e.g., Antares, OmegA) and propulsion systems, as well as providing critical components for other major rockets.
The national space agency of India, responsible for the development of launch vehicles (PSLV, GSLV) and associated space infrastructure for its national space program.