Commercial Resupply Services#Commercial Resupply Services phase 1

NASA has been directed to pursue commercial spaceflight options since at least 1984, with the Commercial Space Launch Act of 1984 and Launch Services Purchase Act of 1990. By the 2000s funding was authorized for the Commercial Orbital Transportation Services program, followed by the Commercial Crew Development program.

On 23 December 2008, NASA announced the initial awarding of cargo contracts - twelve flights to SpaceX and eight flights to Orbital Sciences Corporation.[http://www.nasa.gov/home/hqnews/2008/dec/HQ_C08-069_ISS_Resupply.html "NASA Awards Space Station Commercial Resupply Services Contracts"] {{Webarchive|url=https://web.archive.org/web/20160715085914/http://www.nasa.gov/home/hqnews/2008/dec/HQ_C08-069_ISS_Resupply.html |date=2016-07-15 }}. NASA, December 23, 2008. PlanetSpace, which was not selected, submitted a protest to the Government Accountability Office.{{Cite web |url=https://www.nasaspaceflight.com/2009/01/planetspace-officially-protest-nasas-crs-selection/ |title=Planetspace officially protest NASA's CRS selection |date=January 15, 2009 |author=Chris Bergin}} On 22 April 2009, the GAO publicly released its decision to deny the protest, allowing the program to continue.{{Cite web |url=http://www.gao.gov/decisions/bidpro/401016.htm |title=B-401016; B-401016.2, PlanetSpace, Inc., April 22, 2009 |publisher=GAO |date=April 22, 2009 |access-date=October 7, 2012 |archive-date=March 3, 2016 |archive-url=https://web.archive.org/web/20160303213236/http://www.gao.gov/decisions/bidpro/401016.htm |url-status=dead }}

The Antares and Falcon 9 launch vehicles and Cygnus and Dragon cargo spacecraft were developed using Space Act Agreements under NASA's Commercial Orbital Transportation Services (COTS) program.{{cite web |title=NASA Commercial Orbital Transportation Services |url=http://www.nasa.gov/offices/c3po/about/c3po.html |publisher=NASA |access-date=October 15, 2012 |archive-date=December 6, 2020 |archive-url=https://web.archive.org/web/20201206041313/https://www.nasa.gov/offices/c3po/about/c3po.html |url-status=dead }}

The first flight contracted by NASA, COTS Demo Flight 1, took place on 8 December 2010, demonstrating a Dragon capsule's ability to remain in orbit, receive and respond to ground commands, and communicate with NASA's Tracking and Data Relay Satellite System. On 15 August 2011, SpaceX announced that NASA had combined the objectives of the COTS Demo Flight 2 and following Flight 3 into a single mission.{{cite web|title=SpaceX 2011 Update Page|url=http://www.spacex.com/updates.php|date=December 15, 2011|publisher=SpaceX|access-date=December 3, 2011|archive-url=https://web.archive.org/web/20130727153858/http://www.spacex.com/updates.php|archive-date=July 27, 2013|url-status=dead}}{{Cite web|url=https://www.google.com/hostednews/afp/article/ALeqM5hxEszJ8W7e9pmliOwZgdVcRCz0wQ?docId=CNG.f86f7de5aa4632fa5f9294df8b17a703.31|archive-url=https://web.archive.org/web/20130501012141/http://www.google.com/hostednews/afp/article/ALeqM5hxEszJ8W7e9pmliOwZgdVcRCz0wQ?docId=CNG.f86f7de5aa4632fa5f9294df8b17a703.31|url-status=dead|archive-date=May 1, 2013|title=SpaceX plans November test flight to space station|date=August 15, 2011 |publisher=AFP |access-date=December 3, 2011}} The rescoped COTS Demo Flight 2 successfully launched on 22 May 2012, delivering cargo to the ISS. The spacecraft reentered on 31 May, landed in the Pacific Ocean, and was recovered, completing CRS certification requirements.{{cite web |url=https://spaceflightnow.com/falcon9/003/120602crs/ |title=NASA expects quick start to SpaceX cargo contract |last=Clark |first=Stephen |date=June 2, 2012 |publisher=SpaceFlightNow |access-date=June 23, 2012}}{{cite web |url=http://www.nasa.gov/exploration/commercial/crew-cargo-milestones.html |title=NASA Administrator Announces New Commercial Crew And Cargo Milestones |date=August 23, 2012 |publisher=NASA |access-date=August 23, 2012 |archive-date=February 25, 2021 |archive-url=https://web.archive.org/web/20210225044501/http://www.nasa.gov/exploration/commercial/crew-cargo-milestones.html |url-status=dead }}

Orbital Sciences first launched the Antares rocket from the Mid-Atlantic Regional Spaceport on 21 April 2013 with a test payload.{{cite press release |url=http://www.nasa.gov/home/hqnews/2013/apr/HQ_13-114_Antares_launches.html |title=NASA Partner Orbital Sciences Test Launches Antares Rocket |publisher=NASA |first=Trent J. |last=Perrotto |date=April 21, 2013 |access-date=April 25, 2013}} Orbital Sciences completed the Cygnus Orb-D1 demonstration flight on 29 September 2013, and the operational Cygnus CRS Orb-1 was launched 9 January 2014.{{cite web|url=https://spacenews.com/spacex-wins-5-new-space-station-cargo-missions-in-nasa-contract-estimated-at-700-million/|title=SpaceX wins 5 new space station cargo missions in NASA contract estimated at $700 million - SpaceNews.com|date=February 24, 2016}}{{cite web |url=https://www.gizmag.com/cygnus-dock-iss/29222/|title=Cygnus docks with International Space Station |date=September 29, 2013 |publisher=gizmag.com |access-date=October 1, 2013}}{{cite web |url=http://www.orbital.com/Antares/ |title=Antares home page |date=October 2012 |publisher=Orbital Sciences |access-date=October 13, 2012}}{{cite web |url=http://www.orbital.com/NewsInfo/release.asp?prid=829 |title=Antares press release |date=October 2012 |publisher=Orbital Sciences|access-date=October 13, 2012}}

Transport flights began under Commercial Resupply Services phase 1 (CRS-1) in 2012:

File:U.S. Commercial Cargo Ship Departs Space Station.webm

File:CRS-8 Dragon from ISS (ISS047E050978).jpg

• CRS SpX-1: 8 October 2012{{cite web |title=NASA Celebrates Dragon's Return |url=http://www.nasa.gov/mission_pages/station/multimedia/gallery/dragon_splashdown.html |access-date=2012-10-30 |archive-date=2016-03-05 |archive-url=https://web.archive.org/web/20160305001245/http://www.nasa.gov/mission_pages/station/multimedia/gallery/dragon_splashdown.html |url-status=dead }}
• CRS SpX-2: 1 March 2013{{cite web |last=Clark |first=Stephen |url=https://spaceflightnow.com/launch-log-2012-2014/ |title=Launch Log (2012-2014) |work=Spaceflight Now |access-date=7 July 2021}}
• CRS SpX-3: 18 April 2014
• CRS SpX-4: 21 September 2014.
• CRS SpX-5: 10 January 2015{{cite web |title=CRS-5 Dragon successfully launched – Core ASDS landing attempted |url=https://www.nasaspaceflight.com/2015/01/spacex-dragon-crs-5-launch-historic-core-return/ |publisher=NASASpaceFlight |date=January 10, 2015 |access-date=January 15, 2015}}
• CRS SpX-6: 14 April 2015
• CRS SpX-7: attempted on 28 June 2015. Launch failure 139 seconds after lift-off, IDA-1 destroyed. Investigation traced the accident to the failure of a strut inside the second stage's liquid-oxygen tank. NASA concluded that the most probable cause of the strut failure was a design error: instead of using a stainless-steel eye bolt made of aerospace-grade material, SpaceX chose an industrial-grade material without adequate screening and testing and overlooked the recommended safety margin.{{cite web |url=https://www.nasa.gov/sites/default/files/atoms/files/public_summary_nasa_irt_spacex_crs-7_final.pdf |title=NASA Independent Review Team SpaceX CRS-7 Accident Investigation Report Public Summary |publisher=NASA |date=March 12, 2018 |access-date=March 23, 2018}}

• CRS SpX-8: 8 April 2016
• CRS SpX-9: 18 July 2016
• CRS SpX-10: 19 February 2017
• CRS SpX-11: 3 June 2017
• CRS SpX-12: 14 August 2017
• CRS SpX-13: 15 December 2017{{cite web|url=https://www.theverge.com/2017/12/15/16759416/spacex-nasa-used-falcon-9-rocket-launch-live-stream|title=SpaceX launches and lands its first used rocket for NASA|date=15 December 2017|publisher=The Verge|access-date=December 15, 2017}}
• CRS SpX-14: 2 April 2018
• CRS SpX-15: 29 June 2018{{cite news |url=https://www.nasaspaceflight.com/2018/07/spacex-dragon-iss-arrival-science-crew-supply-payloads/ |title=SpaceX CRS-15 Dragon arrives at ISS with science/crew supply payloads |work=NASASpaceFlight.com |first=Chris |last=Gebhardt |date=July 2, 2018 |access-date=August 9, 2018}}
• CRS SpX-16: 5 December 2018{{Cite web|url=https://blogs.nasa.gov/spacestation/2018/12/08/dragon-attached-to-station-returns-to-earth-in-january/|title=Dragon Attached to Station, Returns to Earth in January – Space Station|website=blogs.nasa.gov|language=en-US|access-date=December 8, 2018|archive-date=December 14, 2018|archive-url=https://web.archive.org/web/20181214122449/https://blogs.nasa.gov/spacestation/2018/12/08/dragon-attached-to-station-returns-to-earth-in-january/|url-status=dead}}{{Cite web|url=https://www.nasaspaceflight.com/2018/12/falcon-9-crs-16-dragon-iss/|title=Falcon 9 successfully lofts CRS-16 Dragon enroute to ISS – Booster spins out but soft lands in water – NASASpaceFlight.com|date=5 December 2018|language=en-US|access-date=December 6, 2018}}{{Cite web|url=https://www.theverge.com/2018/12/5/18127630/spacex-falcon-9-rocket-landing-failure-ground-cape-canaveral|title=For the first time ever, a SpaceX Falcon 9 rocket fails to stick a ground landing|last=Grush|first=Loren|date=December 5, 2018|website=The Verge|access-date=December 6, 2018}}
• CRS SpX-17: 4 May 2019
• CRS SpX-18: 25 July 2019
• CRS SpX-19: 5 December 2019
• CRS SpX-20: 7 March 2020

File:Orb CRS-1 unberthing - crop.jpg

File:ISS-47 Cygnus OA-6 approaching the ISS (1).jpg

• CRS Orb-1{{efn|Cygnus was owned and operated by Orbital Sciences for missions CRS Orb-1 to CRS Orb-3.|group=note}}: 9 January 2014
• CRS Orb-2: 13 July 2014
• CRS Orb-3: 28 October 2014 - launch failure, food and care packages for the crew, parts, experiments, and the Arkyd-3 Flight Test (Non-optical) Satellite from Planetary Resources lost.

Following the failure, the Antares rocket was upgraded to the 230 series which used newly built RD-181 first-stage engines to provide greater payload performance and increased reliability. The next two spacecraft were launched on the Atlas V. With the switch to more powerful launch vehicles and the introduction of a larger Enhanced Cygnus, enabled Orbital ATK to cover their initial CRS contracted payload obligation by OA-7.

• CRS OA-4{{efn|Cygnus was owned and operated by Orbital ATK for missions CRS OA-4 to CRS OA-9E.|group=note}}: 6 December 2015 - Atlas V, first Enhanced Cygnus
• CRS OA-6: 23 March 2016 - Atlas V
• CRS OA-5: 17 October 2016 - Antares 230
• CRS OA-7: 18 April 2017 - Atlas V

During August 2015, Orbital ATK disclosed that they had received an extension of the resupply program for four extra missions. These flights enable NASA to cover ISS resupply needs until CRS-2 begins.

• CRS OA-8E: 12 November 2017
• CRS OA-9E: 21 May 2018{{Cite web|url=https://spaceflight101.com/events/antares-cygnus-oa-9/|title=Antares • Cygnus OA-9|language=en-US|access-date=December 8, 2018}}{{Cite web|url=https://www.nasaspaceflight.com/2018/05/cygnus-oa-9e-science-wont-experiment-module-flight/|title=Cygnus OA-9E delivers the science, won't be used as experiment module this flight – NASASpaceFlight.com|date=28 May 2018|language=en-US|access-date=December 8, 2018}}
• CRS NG-10{{efn|Cygnus has been owned and operated by Northrop Grumman since mission NG-10.|group=note}}: 17 November 2018{{Cite web|url=https://spaceflightnow.com/2018/11/15/antares-cygnus-ng-10-mission-status-center/|title=Live coverage: Commercial Cygnus cargo craft arrives at space station – Spaceflight Now|last=Clark|first=Stephen|language=en-US|access-date=December 8, 2018}}
• CRS NG-11: 17 April 2019{{cite web |last1=Fourst |first1=Jeff |title=Antares launches Cygnus on ISS cargo mission |url=https://spacenews.com/antares-launches-cygnus-on-iss-cargo-mission/ |website=SpaceNews |date=17 April 2019 |access-date=18 April 2019}}{{cite web |last1=Gebhardt |first1=Chris |title=NG-11 Cygnus, S.S. Roger Chaffee, brings the science to ISS |url=https://www.nasaspaceflight.com/2019/04/ng-11-cygnus-brings-science-iss/ |website=NASA Spaceflight |date=19 April 2019 |access-date=4 May 2019}}

NASA began a formal process to initiate Phase 2 of the Commercial Resupply Services, or CRS-2, in early 2014.{{cite web |url=https://prod.nais.nasa.gov/cgibin/eps/synopsis.cgi?acqid=159700 |title= COMMERCIAL RESUPPLY SERVICES 2 – RFI NNJ14ZBG007L |date=February 21, 2014 |publisher=NASA |access-date=February 24, 2014}} Later that year, an "Industry Day" was held in Houston, with seven high-level requirements disclosed to interested parties.

{{cite web |title=International Space Station Commercial Resupply Services 2 Industry Day |url=http://prod.nais.nasa.gov/eps/eps_data/160022-OTHER-001-001.ppt |archive-url=https://web.archive.org/web/20150403074024/https://prod.nais.nasa.gov/eps/eps_data/160022-OTHER-001-001.ppt |url-status=dead |archive-date=April 3, 2015 |date=April 10, 2014 |work=ppt file |publisher=NASA|access-date=April 12, 2014 }}

The contracts were expected to include a variety of requirements:

• delivery of approximately {{convert|14000|to|17000|kg|abbr=on}} per year {{convert|55|to|70|m3|abbr=on|sp=us}} of pressurized cargo in four or five transport trips
• delivery of 24–30 powered lockers per year, requiring continuous power of up to 120 watts at 28 volts, cooling, and two-way communications
• delivery of approximately {{convert|1500|to|4000|kg|abbr=on}} per year of unpressurized cargo, consisting of 3 to 8 items, each item requiring continuous power of up to 250 watts at 28 volts, cooling, and two-way communications
• return/disposal of approximately {{convert|14000|to|17000|kg|abbr=on}} per year {{convert|55|to|70|m3|abbr=on|sp=us}} of pressurized cargo
• disposal of {{convert|1500|to|4000|kg|abbr=on}} per year of unpressurized cargo, consisting of 3 to 8 items
• various ground support services

CRS-1 contractors Orbital Sciences{{efn|name=Orbital|group=note}} and SpaceX each submitted CRS-2 proposals, joined by Sierra Nevada, Boeing, and Lockheed Martin.{{cite news |url= https://spacenews.com/sierra-nevada-hopes-dream-chaser-finds-sweet-spot-of-iss-cargo-competition/ |title= Sierra Nevada Hopes Dream Chaser Finds "Sweet Spot" of ISS Cargo Competition |date= March 17, 2015 |author= Jeff Foust |publisher= Space News }}

SNC's proposal would use a cargo version of its Dream Chaser crew vehicle, the 'Dream Chaser Cargo System'. The proposed cargo Dream Chaser included an additional expendable cargo module for uplift and trash disposal. Downmass would only be provided via the Dream Chaser spaceplane itself. Boeing's proposal likewise used a cargo version of its CST-100 crew vehicle.{{cite news |url= https://spacenews.com/weather-sat-tops-u-s-civil-space-procurement-agenda-for-2015/ |title= Weather Sat, CRS-2 Top U.S. Civil Space Procurement Agenda for 2015 |date= January 24, 2015 |author= Dan Leone |publisher= SpaceNews.com }}{{cite news |url= https://spacenews.com/lockheed-martin-pitches-reusable-tug-for-space-station-resupply/ |title= Lockheed Martin Pitches Reusable Tug for Space Station Resupply |date= March 13, 2015 |author= Jeff Foust |publisher= Space News }}

Lockheed Martin proposed a new cargo spacecraft called Jupiter, derived from the designs of the NASA's MAVEN and Juno spacecraft. It would have included a robotic arm based on Canadarm technology and a {{convert|4.4|m|sp=us|adj=on}} diameter cargo transport module called Exoliner based on the Automated Transfer Vehicle, to be jointly developed with Thales Alenia Space.

{{cite news |last1=Avery|first1=Greg |title=Lockheed Martin proposes building ISS cargo ship for NASA |url=http://www.bizjournals.com/denver/blog/boosters_bits/2015/03/lockheed-martin-proposes-building-iss-cargo-ship.html?page=all |access-date=March 13, 2015 |work=Denver Business Journal |date=March 12, 2015 }}[https://aviationweek.com/space/jupiter-space-tug-could-deliver-cargo-moon 'Jupiter' Space Tug Could Deliver Cargo To The Moon], March 12, 2015, retrieved March 13, 2015.

Three companies were awarded contracts on January 14, 2016.{{cite news |title=Sierra Nevada Corp. joins SpaceX and Orbital ATK in winning NASA resupply contracts|url=https://www.washingtonpost.com/news/the-switch/wp/2016/01/14/nasa-expected-to-soon-announce-contracts-to-resupply-the-international-space-station/|newspaper=Washington Post|date=Jan 14, 2016|access-date=January 17, 2016}} Sierra Nevada Corporation's Dream Chaser, the SpaceX Dragon 2, and Orbital ATK{{efn|name=Orbital|group=note}} Cygnus were selected, each for a minimum of six launches.{{cite press release |url=http://www.nasa.gov/press-release/nasa-awards-international-space-station-cargo-transport-contracts |title=NASA Awards International Space Station Cargo Transport Contracts |publisher=NASA |date=January 14, 2016 |access-date=August 24, 2017}} The maximum potential value of all the contracts was indicated to be $14 billion, but the minimum value is considerably less. CRS-2 launches commenced in 2019 and will extend to at least 2024.

Three more CRS-2 missions for Dragon 2 covering up to CRS-29 were announced in December 2020.{{cite web |last=Krebs |first=Gunter |url=https://space.skyrocket.de/doc_sdat/dragon-v2c.htm |title=Dragon CRS-21,... CRS-29 (SpX 21,... 29) |work=Gunter's Space Page |date=19 April 2021 |access-date=3 May 2021}}{{cite web |url=https://sma.nasa.gov/docs/default-source/sma-disciplines-and-programs/smsr/smsr-intergrated-master-schedule_24feb2020.pdf |title=SMSR Integrated Master Schedule |work=Office of Safety and Mission Assurance |publisher=NASA |archive-url=https://web.archive.org/web/20210614003506/https://sma.nasa.gov/docs/default-source/sma-disciplines-and-programs/smsr/smsr-intergrated-master-schedule_24feb2020aab4a269d2a865b9a1a0ff0f003ca228.pdf?sfvrsn=8290faf8_26 |archive-date=14 June 2021 |date=7 June 2021 |access-date=14 June 2021}}

File:Dream Chaser pre-drop tests.7.jpg in development, 2013 drop-test preparations shown]]

When NASA issued the Commercial Resupply Services phase 2 (CRS-2) request for proposal (RFP) in September 2014, it received interest from five companies: Lockheed Martin, Boeing, Orbital ATK, Sierra Nevada, and SpaceX. NASA made a competitive range determination to remove Boeing and Lockheed Martin.

Orbital ATK (later purchased by Northrop Grumman), Sierra Nevada, and SpaceX were awarded CRS-2 contracts in January 2016 with initial task orders awarded in June 2016. Each of the three companies is guaranteed at least six cargo missions under the CRS-2 contract. As of December 2017, NASA had awarded $2.6 billion on three contracts with a combined, not-to-exceed value of $14 billion. NASA officials explained that selecting three companies rather than two for CRS-2 increases cargo capabilities and ensures more redundancy in the event of a contractor failure or schedule delay.

The CRS-2 flights commenced in November 2019 with the launch of Cygnus NG-12 mission.{{cite web |url=https://oig.nasa.gov/docs/IG-18-016.pdf |title=Audit of the Commercial Resupply Services to the International Space Station |date=26 April 2018 |publisher=NASA Office of Inspector General |access-date=18 February 2020}}

Inside-cargo is typically transported to and from the space station in "the form factor of single Cargo Transfer Bag Equivalent (CTBE) [which is the] unit for size of bag used to transport cargo from visiting vehicles, such as SpaceX Dragon, Northrop Grumman Cygnus, or JAXA H-II Transfer Vehicle (HTV). The bags are sized at {{cvt|19|x|16.25|x|9|in|cm|sigfig=2|disp=flip}} and limited in transport mass to {{cvt|60|lb|kg|disp=flip}} each.{{cite web |title=Commercial and Marketing Pricing Policy |url=https://www.nasa.gov/leo-economy/commercial-use/pricing-policy |access-date=5 March 2021 |website=nasa.gov |date=5 March 2021 }} CTBE units are also used to price, and charge, commercial users of US Orbital Segment stowage space.{{cite web |title=Commercial and Marketing Pricing Policy |url=https://www.nasa.gov/leo-economy/commercial-use/pricing-policy |access-date= |website=nasa.gov |date=7 June 2019 |archive-date=1 July 2019 |archive-url=https://web.archive.org/web/20190701065904/https://www.nasa.gov/leo-economy/commercial-use/pricing-policy }}

File:Cargo Placed in the Northrop Grumman Cygnus Spacecraft (50937247607).jpg in 2021]]

• CRS NG-12: 2 November 2019
• CRS NG-13: 15 February 2020
• CRS NG-14: 3 October 2020
• CRS NG-15: 20 February 2021
• CRS NG-16: 10 August 2021
• CRS NG-17: 19 February 2022
• CRS NG-18: 7 November 2022
• CRS NG-19: 2 August 2023

As a result Russia's invasion of Ukraine, Northrop Grumman was left with only two remaining Antares 230+ launch vehicles which were used for the CRS NG-18 and CRS NG-19 missions. Northrop Grumman acquired three flights from SpaceX with the Falcon 9 rocket while a replacement first stage and its engine are developed for its Antares 330 rocket.{{cite web |url=https://www.reuters.com/lifestyle/science/northrop-taps-rocket-startup-firefly-replace-antares-russian-engines-2022-08-08/ |title=Northrop taps rocket startup Firefly to replace Antares' Russian engines |website=Reuters |date=8 August 2022 |quote=Those Falcon 9 missions will launch in late 2023 and 2024.}}

• CRS NG-20: 30 January 2024
• CRS NG-21: 4 August 2024
• CRS NG-22: TBD (indefinitely delayed after cargo module damaged during shipment){{Cite news |last=Berger |first=Eric |author-link=Eric Berger (journalist) |date=2025-03-26 |title=After a spacecraft was damaged en route to launch, NASA says it won’t launch |url=https://arstechnica.com/space/2025/03/nasa-sidelines-cygnus-spacecraft-after-damage-in-transit-to-launch-site/ |access-date=2025-03-27 |work=Ars Technica |language=en-US}}

Northrop Grumman plans to launch further missions using the new Antares 300 series (Antares 330) rockets with booster stage and engines developed by Firefly Aerospace.{{Cite web |title=Northrop Grumman Teams with Firefly Aerospace to Develop Antares Rocket Upgrade and New Medium Launch Vehicle |url=https://news.northropgrumman.com/news/releases/northrop-grumman-teams-with-firefly-aerospace-to-develop-antares-rocket-upgrade-and-new-medium-launch-vehicle |date=8 August 2022 |access-date=21 August 2022 |website=Northrop Grumman Newsroom |language=en}} These missions are also slated to use a new enlarged "Mission B" variant of the Cygnus spacecraft.

• CRS NG-23: Q4 2025 (planned)
• CRS NG-24: 2026 (planned)
• CRS NG-25: 2026 (planned){{cite news|url=https://www.nasa.gov/feature/nasa-orders-additional-cargo-flights-to-space-station|title=NASA Orders Additional Cargo Flights to Space Station|publisher=NASA|date=25 March 2022|access-date=25 March 2022}}

• CRS SpX-21: 6 December 2020
• CRS SpX-22: 3 June 2021
• CRS SpX-23: 29 August 2021
• CRS SpX-24: 21 December 2021
• CRS SpX-25: 15 July 2022
• CRS SpX-26: 26 November 2022
• CRS SpX-27: 14 March 2023
• CRS SpX-28: 5 June 2023
• CRS SpX-29: 10 November 2023
• CRS SpX-30: 21 March 2024
• CRS SpX-31: 5 November 2024
• CRS SpX-32: 21 April 2025
• CRS SpX-33: August 2025 (planned){{Cite AV media |url=https://www.youtube.com/watch?v=XJVKM90SdKs |title=NASA’s SpaceX Crew-9 Post-Splashdown News Conference |date=2025-03-18 |time=1:04:24 |access-date=2025-03-18 |quote=There is a particular SpaceX cargo flight, CRS-33, that has the ability to do some re-boosts for the space station and that needs to fly in than late August/early September timeframe, so we moved the handover up. The boost trunk, as we call it, will be there for a large part of the fall timeframe.}}
• CRS SpX-34: Early 2026 (planned)
• CRS SpX-35: Late 2026 (planned)

• SSC Demo-1: Q3 2025 (planned)
• CRS SSC-1 to CRS SSC-6: TBA

• Cargo spacecraft
• Commercial Crew Development (CCDev) – development of crew vehicles
• Commercial Orbital Transportation Services
• Comparison of space station cargo vehicles
• Dream Chaser
• Cygnus (spacecraft)
• Crew Dragon
• Multi-Purpose Logistics Module (STS cargo container)
• Commercial Lunar Payload Services

{{reflist|group=note}}

{{Reflist|2|refs=

{{cite web |url=https://www.nasaspaceflight.com/2015/08/orbital-atk-progress-return-antares/ |title=Orbital ATK make progress toward Return To Flight of Antares rocket |last=Chris |date=August 14, 2015 |website=NASASpaceflight.com |access-date=August 14, 2015}}

{{cite web |url=https://spacenews.com/nasa-orders-two-more-iss-cargo-missions-from-orbital-atk/ |title=NASA Orders Two More ISS Cargo Missions From Orbital ATK |last=Leone |first=Dan |website=SpaceNews.com |date=August 17, 2015 |access-date=August 17, 2015}}

{{cite web |url=https://spacenews.com/nasa-considering-more-cargo-orders-from-orbital-atk-spacex/ |title=NASA Considering More Cargo Orders from Orbital ATK, SpaceX |last=Leone |first=Dan |website=SpaceNews.com |date=August 20, 2015 |access-date=August 20, 2015}}

}}

• [http://www.nasa.gov/offices/c3po/home/index.html NASA Commercial Crew and Cargo webpage]
• [http://www.spacex.com SpaceX (Space Exploration Technologies Corporation)]
• [http://www.orbital.com OSC (Orbital Sciences Corporation)]
• [https://www.nasa.gov/centers/johnson/news/contracts/index.html CRS contracts and Space Act agreements]

{{NASA space program}}

{{ISS modules}}

{{Uncrewed ISS flights}}

{{SpaceX}}

{{Dragon spaceflights}}

{{Cygnus spaceflights}}

{{Dream Chaser}}

Category:Private spaceflight

Category:International Space Station

Category:NASA programs

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