Circadian Rhythms: FE-6 Gerst donned the Circadian Rhythms hardware to start a 36 hour data take. The main objective of the experiment is to get a better basic understanding of any alterations in circadian rhythms in humans during long-term space flights. This data will provide important insights into the adaptations of the human autonomic nervous …
The launch of a United Launch Alliance Delta II carrying NASA's Orbiting Carbon Observatory-2 (OCO-2) satellite was scrubbed today due to an issue with the water suppression system that is used to flow water on the launch pad to dampen the acoustic energy during launch. Pending the outcome of troubleshooting, the launch is rescheduled for …
Today's launch attempt was scrubbed because of a failure in a Vandenberg Air Force Base Space Launch Complex 2 pad water system. The system provides sound suppression to dampen acoustic waves at liftoff and protects a launch pad flame duct. The countdown was halted at T-46 seconds. The Orbiting Carbon Observatory-2 (OCO-2) spacecraft is on …
NASA Launch Manager Tim Dunn has polled his launch team to confirm NASA is "go" for an on-time launch. The Delta II rocket and OCO-2 spacecraft are ready for flight and weather continues to cooperate.
This is a 10-minute hold. In a few minutes, Launch Director Don Malin of United Launch Alliance and NASA Launch Manager Tim Dunn will check with their teams to confirm that the rocket, spacecraft and all the necessary ground systems are ready for launch. The OCO-2 spacecraft is "go" to transfer to internal power.
The countdown has resumed. There's one more planned hold coming up at T-4 minutes.
The OCO-2 mission has special meaning to NASA's Launch Services Program, as we have dedicated it to one of our LSP teammates, Laurie Walls. Laurie began her career more than 30 years ago as a thermal engineer for McDonnell Douglas in Huntsville, Alabama, supporting NASA's Marshall Space Flight Center. She moved to Florida in 1985 …
Countdown clocks are holding at the T-15 minute mark. This is a routine hold scheduled to last 20 minutes.
Up next is a check of the rocket's first- and second-stage engine nozzles, which are put through a pattern of movements, called "slews," to check their steering capabilities. The second-stage engine is tested first, followed by the first-stage engine. A built-in hold in the countdown is coming up at the T-15 minute mark.
The countdown is proceeding smoothly at exactly one hour until liftoff.
