The uncrewed resupply ship will dock itself at the station at 11 a.m. EDT (!500 GMT) to deliver more than 4,800 pounds (2,200 kilograms) of supplies. NASA’s webcast of the docking will begin at 9:30 a.m. EDT (1330 GMT) as the Dragon approaches the station.
You can watch the docking live in the window above, courtesy of NASA TV.
SpaceX is targeting Saturday, August 28 for Dragon’s launch of its 23rd Commercial Resupply Services (CRS-23) mission. Liftoff is targeted for 3:37 a.m. EDT, or 7:37 UTC, from Launch Complex 39A (LC-39A) at Kennedy Space Center, Florida. A backup launch opportunity is available on Sunday, August 29 at 3:14 a.m. EDT, or 7:14 UTC.
Falcon 9’s first stage booster previously supported SpaceX’s Crew-1 and Crew-2 missions, which launched astronauts to the International Space Station, and launch of SXM-8. Following stage separation, SpaceX will land Falcon 9’s first stage on the “A Shortfall of Gravitas” droneship, which will be located in the Atlantic Ocean.
The Dragon spacecraft supporting this mission previously supported SpaceX’s 21st Commercial Resupply Services (CRS-21) mission. Dragon will separate from Falcon 9’s second stage about twelve minutes after liftoff and autonomously dock to the space station on Sunday, August 29 at approximately 11:00 a.m. EDT, 15:00 UTC.
A live webcast of this mission will begin about 15 minutes prior to liftoff.
00:38:00 – SpaceX Launch Director verifies go for propellant load
00:35:00 – RP-1 (rocket grade kerosene) loading begins
00:35:00 – 1st stage LOX (liquid oxygen) loading begins
00:16:00 – 2nd stage LOX loading begins
00:07:00 – Falcon 9 begins pre-launch engine chill
00:05:00 – Dragon transitions to internal power
00:01:00 – Command flight computer to begin final prelaunch checks
00:01:00 – Propellant tanks pressurize for flight
00:00:45 – SpaceX Launch Director verifies go for launch
00:00:03 – Engine controller commands engine ignition sequence to start
00:00:00 – Falcon 9 liftoff
LAUNCH, LANDING, AND DEPLOYMENT
00:01:12 – Max Q (moment of peak mechanical stress on the rocket)
00:02:27 – 1st stage main engine cutoff (MECO)
00:02:30 – 1st and 2nd stages separate
00:02:38 – 2nd stage engine starts
00:02:43 – 1st stage boostback burn begins
00:05:49 – 1st stage entry burn begins
00:07:38 – 1st stage landing
00:08:34 – 2nd stage engine cutoff (SECO)
00:11:45 – Dragon separates from 2nd stage
NASA commercial cargo provider SpaceX is targeting Saturday, Aug. 28, at 3:37 a.m. EDT to launch its 23rd commercial resupply services mission to the International Space Station. Liftoff will be from Launch Complex 39A at the agency’s Kennedy Space Center in Florida. SpaceX’s Dragon spacecraft will deliver new science investigations, supplies, and equipment for the international crew.
Dragon will deliver a variety of NASA investigations, including one that will determine if metabolites from grape skins and seeds used in wine making could help prevent and treat osteoporosis. A new robotic arm scheduled for demonstration could reveal potential uses on Earth, including in disaster relief. Another experiment will test an implantable, remote-controlled drug delivery system that will utilize a new research facility aboard the orbiting laboratory. Several Girl Scouts’ experiments also will use this new facility to study plants, ants, and brine shrimp in microgravity.
About 12 minutes after launch, Dragon will separate from the Falcon 9 rocket’s second stage and begin a carefully choreographed series of thruster firings to reach the space station. Arrival to the station is planned for Sunday, Aug. 29. Dragon will dock autonomously to the forward-facing port of the station’s Harmony module, with Expedition 65 Flight Engineers Shane Kimbrough and Megan McArthur of NASA monitoring operations.
The spacecraft is expected to spend about a month attached to the orbiting outpost before it returns to Earth with research and return cargo, splashing down off the coast of Florida.
Full coverage of this mission is as follows (all times Eastern):
Saturday, Aug. 28
3:15 a.m. – NASA TV launch coverage begins for the 3:37 a.m. launch.
Sunday, Aug. 29
9:30 a.m. – NASA TV coverage begins for Dragon docking to space station.
11 a.m. – Docking.
The deadline for media to apply for accreditation for this launch has passed, but general information about media accreditation is available by emailing: [email protected]
NASA TV launch coverage
Live coverage of the launch on NASA TV will begin at 3:15 a.m. Saturday, Aug. 28. For NASA TV downlink information, schedules, and links to streaming video, visit:
Audio of the news conference and launch coverage will be carried on the NASA “V” circuits, which may be accessed by dialing 321-867-1220, -1240, -1260 or -7135. On launch day, “mission audio” countdown activities without NASA TV launch commentary will be carried on 321-867-7135.
On launch day, a “clean feed” of the launch without NASA TV commentary will be carried on the NASA TV media channel.
NASA website launch coverage
Launch day coverage of the mission will be available on the NASA website. Coverage will include live streaming and blog updates beginning no earlier than 3:15 a.m. Saturday, Aug. 28, as the countdown milestones occur. On-demand streaming video and photos of the launch will be available shortly after liftoff. For questions about countdown coverage, contact the Kennedy newsroom: at 321-867-2468. Follow countdown coverage on our launch blog at:
Attend the launch virtually
Members of the public can register to attend this launch virtually. Registrants will receive mission updates and activities by email. NASA’s virtual guest program for this mission also includes curated launch resources, notifications about related opportunities, and a virtual guest passport stamp following a successful launch.
Watch and engage on social media
Let people know you’re following the mission on Twitter, Facebook, and Instagram by using the hashtags #Dragon and #NASASocial. You can also stay connected by following and tagging these accounts:
Instagram: @NASA, @NASAKennedy, @ISS, @ISSNationalLab, @SpaceX
Learn more about the SpaceX resupply mission at:
‘ISS Live!’ Tune in to the space station
Find out what the astronauts and cosmonauts aboard the International Space Station are up to by tuning in to the “ISS Live” broadcast. Hear conversations between the crew and mission controllers on Earth and watch them work inside the U.S. segment of the orbiting laboratory. When the crew is off duty, you can enjoy live views of Earth from Space. You can watch and listen in the window below, courtesy of NASA.
“Live video from the International Space Station includes internal views when the crew is on-duty and Earth views at other times. The video is accompanied by audio of conversations between the crew and Mission Control. This video is only available when the space station is in contact with the ground. During ‘loss of signal’ periods, viewers will see a blue screen.
“Since the station orbits the Earth once every 90 minutes, it experiences a sunrise or a sunset about every 45 minutes. When the station is in darkness, external camera video may appear black, but can sometimes provide spectacular views of lightning or city lights below.”
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Update for 3:32 a.m. ET: Saturday’s planned launch of the SpaceX Dragon CRS-23 mission has been scrubbed due to weather. The next available launch opportunity is on Sunday (Aug. 29) at 3:14 a.m. EDT (0714 GMT). Read the full story.
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