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In the context of a rocket launch, the "L minus Time" is the physical time before launch, e.g. "L minus 3 minutes and 40 seconds". "T minus Time" is a system to mark points at which actions necessary for the launch are planned - this time stops and starts as various hold points are entered, and so doesn't show the actual time to launch.
STS-51-L was the disastrous 25th mission of NASA's Space Shuttle program and the final flight of Space Shuttle Challenger. It was planned as the first Teacher in Space Project flight in addition to observing Halley's Comet for six days and performing a routine satellite deployment.
The closest thing the space agency has today to the Saturn 5 is the Space Launch System (SLS), the massive rocket designed to be used in the Artemis program, which aims to have American astronauts ...
"A day for the history books," engineers at SpaceX said as the booster landed. This engineering feat is unlike anything ever seen in orbital rocket technology, but Musk has been touting it for years.
Space Shuttle Challenger breaks up during its 1986 launch resulting in the death of all seven crew members. This article lists verifiable spaceflight-related accidents and incidents resulting in human death or serious injury. These include incidents during flight or training for crewed space missions and testing, assembly, preparation, or ...
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Space launch involves liftoff, when a rocket or other space launch vehicle leaves the ground, floating ship or midair aircraft at the start of a flight. Liftoff is of two main types: rocket launch (the current conventional method), and non-rocket spacelaunch (where other forms of propulsion are employed, including airbreathing jet engines).
"It Happened Today" Collapse into Now: Peter Buck, Mike Mills, Michael Stipe: Jacknife Lee and R.E.M. 2011 "It's a Free World, Baby" Coneheads soundtrack: Bill Berry, Peter Buck, Mike Mills, Michael Stipe: Scott Litt and R.E.M. 1993 "It's the End of the World As We Know It (And I Feel Fine)" Document: Bill Berry, Peter Buck, Mike Mills, Michael ...