Ariane 6

Description

Two variants of Ariane 6 are offered:

• Ariane 62 (A62), with two P120C solid boosters, weighs around 530000 kg at liftoff and is mainly for government and scientific missions. It can launch up to 4500 kg into geosynchronous transfer orbit (GTO) and 10350 kg into low Earth orbit (LEO). The first launch in 2024 used this variant;
• Ariane 64 (A64), with four P120C boosters, has a liftoff weight of around 860000 kg and is intended for commercial dual-satellite launches of up to 11500 kg into GTO and 21500 kg into LEO. Like Ariane 5, it will be able to launch two geosynchronous satellites together.

Rocket components are transported by sea from Europe to the Guiana Space Centre aboard the Canopée, a cargo vessel that uses sails to assist with its propulsion, reducing fuel use.

First stage

The first (lower) stage of Ariane 6 is called the Lower Liquid Propulsion Module (LLPM). It is powered by a single Vulcain 2.1 engine fueled by liquid hydrogen (LH2) with liquid oxygen (LOX). The LLPM is 5.4 m in diameter and contains approximately 140 t of propellant.

Boosters

Additional thrust for the first stage will be provided by either two or four P120C model solid rocket boosters, known within Ariane 6 nomenclature as Equipped Solid Rockets (ESR).

Second stage

The second (upper) stage of Ariane 6 is called the Upper Liquid Propulsion Module (ULPM). It shares the same 5.4 m diameter as the LLPM and is also fueled by LH2 and LOX. It is powered by the Vinci engine, which delivers 180 kN of thrust, burns for up to 900 seconds and is capable of up to five restarts. The ULPM carries about 31 t of propellant.

ASTRIS

The Ariane Smart Transfer and Release In-orbit Ship (ASTRIS) was originally conceived as a kick stage to enable higher orbits for specific payloads. However, it was decided during the November 2025 ESA Council Meeting to evolve ASTRIS into an orbital transfer vehicle.

Designed specifically for the Ariane 6 rocket, it will be an optional add-on to the upper stage and interface directly with the payload. ASTRIS features a steerable main engine that can reignite multiple times to perform orbital changes, and it has six thrusters to perform manoeuvres such as reorienting itself in space along its trajectory.

This will simplify many missions by off-loading some of the required built-in propulsion capabilities of payloads to move themselves to their final orbital position. For example , Astris could enable deep space exploration for ridesharing payloads with destinations such as asteroids, the Moon and Mars; insert a payload directly into geostationary orbit; or augment Ariane 6’s ability to deploy multiple payloads such as a constellation into separate low Earth orbits on a single launch.

ASTRIS can also deliver satellites for a small constellation directly into their operational orbits, allowing for the satellites to be smaller and cheaper to build. Ground qualification is expected by the end of 2028, with the inaugural flight in 2029.

Fairing

The payload fairing, constructed by Beyond Gravity from a carbon fibre-polymer composite, is designed as a nose cone that splits vertically into two halves at the top of the Ariane 6 rocket. It is available in two sizes: a long 20 m version and a short 14 m version, both with a diameter of 5.4 m. The interior of the cylindrical payload compartment is 4.6 m in diameter and the long variant measures 11 m in height, or 18 m when including the conical portion of the fairing.

Block 2

A more powerful "Block 2" version of Ariane 6 is slated to enter service in 2026, featuring enlarged P160C solid rocket boosters and an enhanced Vinci engine in the upper stage with increased thrust of 200 kN. These improvements will expand the rocket’s flight envelope and significantly boost its payload capacity, with an expected gain of 2 t to low Earth orbit on the Ariane 64.

Development of the P160C boosters began in 2022. The upgraded boosters are extended by 1 m to carry an additional 14 t of propellant. Notably, 16 of the 18 planned Kuiper launches on Ariane 6 will incorporate this upgraded booster. The first P160C booster casing was built in June 2024, with fueling and static fire tests anticipated in 2025.

To support these more powerful rockets, CNES is assisting in modifying the existing launch pad. The first Ariane 6 launch with the P160C is planned for Q2 2026 in the Ariane 64 configuration.

Block 3

An additional Block 3 upgrade is being discussed by the European Space Agency, ArianeGroup and CNES. Increased performance will primarily be achieved via an upgraded upper stage.

PHOEBUS (Prototype of a Highly OptimizEd Black Upper Stage) is a program to replace the metal tanks currently used with lighter linerless CFRP tanks for Ariane 6. This offers the possibility of saving several tonnes of mass, allowing for more payload mass. A full scale liquid oxygen model is being readied for tests in early 2026, while tests with liquid hydrogen will start in April 2026.

The impetus for the upgrade is a number of upcoming lunar missions, including the European Argonaut logistics lunar lander project. A decision is expected during the November 2025 European ministerial meeting.

History

Ariane 6 was conceived in the early 2010s to be a replacement launch vehicle for Ariane 5, and a number of concepts and high-level designs were suggested and proposed during 2012–2015. Development funding from several European governments was secured by early 2016, and contracts were signed to begin detailed design and the build of test articles. In 2019, the maiden orbital flight had been planned for 2020, In October 2020, the European Space Agency (ESA) formally requested an additional in funding from the countries sponsoring the project to complete development of the rocket and get the vehicle to its first test flight, which had slipped to the second quarter of 2022. By June 2021, the date had delayed to late 2022. In June 2022, a delay was announced to "some time in 2023" and by October 2022, ESA clarified that the first launch would be no earlier than the fourth quarter of 2023, while providing no public reason for the delay. In August 2023, ESA announced that the date for the first launch had slipped again to 2024.

Concept and early development: 2010–2015

Following detailed definition studies in 2012, ESA announced in July 2013 the selection of the "PPH" (first stage of three P145 rocket motors, second stage of one P145 rocket motor, and H32 cryogenic upper stage) configuration for Ariane 6. It would be capable of launching up to 6500 kg to Geostationary transfer orbit (GTO), with a first flight projected to be as early as 2021–2022. Development was projected to cost €4 billion . A 2014 study concluded that development cost could be reduced to about €3 billion by limiting contractors to five countries.

While Ariane 5 typically launches one large and one medium satellite at a time, the PPH proposal for Ariane 6 was intended for single payloads, with an early 2014 price estimate of approximately US$95 million per launch. The SpaceX Falcon 9 and the Chinese Long March 3B both launch smaller payloads but at lower prices, approximately $57 million and $72 million respectively as of early 2014, making the Falcon 9 launch of a midsize satellite competitive with the cost of the lower slot of a dual payload Ariane 5. For lightweight all-electric satellites, Arianespace intended to use the restartable Vinci engine to deliver the satellites closer to their operational orbit than the Falcon 9 could, thus reducing the time required to transfer to geostationary orbit by several months.

Ariane 6.1 and Ariane 6.2 proposals

In June 2014, Airbus and Safran surprised ESA by announcing a counter proposal for the Ariane 6 project: a 50/50 joint venture to develop the rocket, which would also involve buying out the French government's CNES interest in Arianespace.

This proposed launch system would come in two variants, Ariane 6.1 and Ariane 6.2. While both would use a cryogenic main stage powered by a Vulcain 2 engine and two P145 solid boosters, Ariane 6.1 would feature a cryogenic upper stage powered by the Vinci engine and boost up to 8500 kg to GTO, while Ariane 6.2 would use a lower-cost hypergolic upper stage powered by the Aestus engine. Ariane 6.1 would have the ability to launch two electrically powered satellites at once, while Ariane 6.2 would be focused on launching government payloads.

French newspaper La Tribune questioned whether Airbus Defence and Space could deliver on the promised costs for their Ariane 6 proposal, and whether Airbus and Safran Group could be trusted when they were found to be responsible for a failure of Ariane 5 flight 517 in 2002 and a more recent 2013 failure of the M51 ballistic missile. The companies were also criticised for being unwilling to incur development risks, and asking for higher initial funding than originally planned instead of . Estimated launch prices of for Ariane 6.1 and for Ariane 6.2 did not compare favorably to SpaceX offerings. During the meeting of EU ministers in Geneva on 7 June 2014, these prices were deemed too high and no agreement with manufacturers was reached.

Ariane 62 and Ariane 64 proposals

Following criticism of the Ariane 6 PPH design, France unveiled a revised Ariane 6 proposal in September 2014. This launcher would use a cryogenic main stage powered by the Vulcain 2 and upper stage powered by the Vinci but vary the number of solid boosters. With two P120C boosters, Ariane 6 would launch up to 5000 kg to GTO at a cost of €75 million. With four boosters, Ariane 6 would be able to launch two satellites totaling 11000 kg to GTO at a cost of €90 million.

This proposal, unlike Ariane 6 PPH, offered a scalable launcher while retaining Ariane 5's dual-launch capability. The proposal also included simplification of the industrial and institutional organisation along with a better and cheaper version of the Vulcain 2 engine for the main stage. Although Ariane 6 was projected to have "lower estimated recurring production costs", it was projected to have "a higher overall development cost owing to the need for a new, Ariane 6-dedicated, launch pad".

The Italian, French, and German space ministers met on 23 September 2014, in order to plan strategy and assess the possibility for agreement on funding for the Ariane 5 successor, and in December 2014, ESA selected the Ariane 62 and Ariane 64 designs for development and funding.

At the 2022 International Astronautical Congress, ArianeGroup announced the proposed "Smart Upper Stage for Innovative Exploration", a reusable upper stage for the 64 (or later) variant, capable of autonomous cargo operations or carrying five astronauts to LEO.

Test vehicle development: 2016–2021

In November 2015, an updated design of Ariane 64 and 62 was presented, with new nose cones on the boosters, main stage diameter increased to 5.4 m, and the height decreased to 60 m.

The basic design for Ariane 6 was finalised in January 2016 as an expendable liquid-fuelled core stage plus expendable solid-rocket-boosters design. Development advanced into detailed design and production phases, with the first major contracts already signed. Unlike previous Ariane rockets, which are assembled and fueled vertically before being transported to the launchpad, the Ariane 6 main stages were to be assembled horizontally at the new integration hall in Les Mureaux and then transported to French Guiana, to be erected and integrated with boosters and payload.

The horizontal assembly process was inspired by the Russian tradition for Soyuz and Proton launcherswhich had more recently been applied to the American Delta IV and Falcon 9 boosterswith a stated goal of halving production costs.

The industrial production process was completely overhauled, allowing synchronized workflow between several European production sites moving at a monthly cadence, which would enable twelve launches per year, doubling Ariane 5's yearly capacity. Ariane 6 was to be the first large rocket to use a laser ignition system developed by Austria's Carinthian Research Center (CTR), that was previously deployed in automotive and turbine engines. A solid state laser offers an advantage over electrical ignition systems in that it is more flexible with regards to the location of the plasma within the combustion chamber, offers a much higher pulse power and can tolerate a wider range of fuel-air mixture ratios.

Reorganisation of the industry behind a new launch vehicle, leading to the creation of Airbus Safran Launchers (ASL), also started a review by the French government into tax matters, and the European Commission over a possible conflict of interest if Airbus Defence and Space, a satellite manufacturer, were to purchase launches from ASL.

While development was initially slated to be substantially complete in 2019, with an initial launch in 2020, the initial launch date has slipped several times: first to 2021, then to 2022, In October 2022, Arianespace expected the maiden flight to occur in 2023, The maiden flight VA262 took place 9 July 2024 and successfully orbited some satellites even though the mission did suffer some problems.

Future development options

Main article: Adeline (rocket stage), Ariane Next

CNES began studies in 2010

In June 2015, Airbus Defence and Space announced that Adeline, a partially reusable first stage, would become operational between 2025 and 2030 and that it would be developed as a subsequent first stage for Ariane 6. Rather than developing a way to reuse an entire first stage (like SpaceX), Airbus proposed a system where only high-value parts would be safely returned using a winged module at the bottom of the rocket stack.

In August 2016, ASL gave some more details about future development plans building on the Ariane 6 design. CEO Alain Charmeau revealed that Airbus Safran were now working along two main lines: first, continuing work (at the company's own expense) on the recoverable Adeline engine-and-avionics module; and second, beginning development of a next-generation engine to be called Prometheus. This engine would have about the same thrust as the Vulcain 2 currently powering Ariane 5 but would burn methane instead of liquid hydrogen. Charmeau was non-committal about whether Prometheus (still only in the first few months of development) could be used as an expendable replacement for the Vulcain 2 in Ariane 6, or whether it was tied to the re-usable Adeline design, saying only that "We are cautious, and we prefer to speak when are sure of what we announce... But certainly this engine could very well fit with the first stage of Ariane 6 one day", a decision on whether to proceed with Prometheus in an expendable or reusable role could be made between 2025 and 2030. Charmeau was not positive about reusability in 2018, stating that if Ariane had a launch schedule of ten flights per year and had a rocket that could be reused ten times, the company would only build one rocket per year, making supporting an ongoing manufacturing supply chain unviable ("I cannot tell my teams: Goodbye, see you next year!"). Ariane would need 30 launches a year to justify the cost of researching reusability, he said.

In 2017, the Prometheus engine project was revealed to have the aim of reducing the engine unit cost from the €10 million of the Vulcain2 to €1 million and allowing the engine to be reused up to five times. The engine development is said to be part of a broader effort – codename Ariane NEXT – to reduce Ariane launch costs by a factor of two beyond improvements brought by Ariane 6. The Ariane NEXT initiative includes a reusable sounding rocket, Callisto, to test the performance of various fuels in new engine designs.

The European Space Agency is exploring human-rating certification for Ariane 6, awarding Arianespace a contract to explore potential options for enabling crewed missions to be launched aboard the vehicle.

Production

In a January 2019 interview, Arianespace CEO Stéphane Israël said that the company would require four more institutional launches for Ariane 6 to sign a manufacturing contract. Launch contracts would be needed for the transitional period of 2020–2023 when Ariane 5 will be phased out and gradually replaced by Ariane 6. The company would require European institutions to become an anchor customer for the launcher. In response, ESA representatives said the agency was working on shifting the 2022 launch of the Jupiter Icy Moons Explorer from Ariane 5 ECA to Ariane 64, further indicating that there are other institutional customers in Europe that must put their weight behind the project, such as the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) or the European Commission.

, Arianespace had sold three flights of the Ariane 6 launch vehicle. One month later, they added a satellite internet constellation launch contract with OneWeb to utilize the maiden launch of Ariane 6 to help populate the large 600-satellite constellation.

On 6 May 2019, Arianespace ordered the first production batch of 14 Ariane 6 rockets. In late 2025, the company ordered long lead time components for 27 more Ariane 6 rockets, enough for launches to 2030.

In 2024, Arianespace expected that their launch tempo would increase to six in 2025, eight in 2026, and stabilize at ten per year starting in 2027.

At the end of 2025, Ariane 6 had more than 30 flights booked (4 years of activity ensured) including 18 launches for the Amazon Leo constellation of satellites. Up to 8 launches are expected for 2026.

Development funding

Ariane 6 was developed in a public-private partnership with the majority of the funding coming from various ESA government sources. , the estimated government development cost over the then planned 6-year development phase through 2020 was of government-provided funds, while was reported to be "industry's share". At the time, in a novel approach for ESA, this was to be "an arrangement in which the [Airbus Safran] company takes full control of Ariane 6 design and development and commits to a firm, fixed-price contract"

By the time the ESA Council approved the project in November 2016, the ESA had already paid out to Airbus Safran and the ESA Industrial Policy Committee released of additional funds on 8 November 2016.

In January 2020, two EU institutions, the European Investment Bank and the European Commission, loaned €100 million to Arianespace, drawing from the Horizon 2020 and Investment Plan for Europe corporate investment programmes. The 10-year loan's repayment is tied to the financial success of the Ariane 6 project.

Launch history

List of launches

Planned launches

Criticism

The Ariane 6 programme has faced substantial criticism for its cost per launch and lack of reusability. When the programme was approved by the European Space Agency (ESA) in 2012, the programme was intended to produce a modernised successor to the Ariane 5 with a focus on cost optimisation. However, over the course of its more than a decade-long development, the project experienced delays and cost overruns. Initially expected to be 50% cheaper than its predecessor, the Ariane 6 now has projected launch prices exceeding €100 million per mission — above the original estimates of €70 million for the A62 and €90 million for the A64. The cost per launch has limited the rocket's appeal to commercial clients outside of Europe.

A major criticism of the Ariane 6 stems from its reliance on expendable technology at a time when competitors have demonstrated the economic advantages of reusability. For example, SpaceX iteratively developed its Falcon 9 rocket, nearly doubling its payload capacity and making it partially reusable, lowering the company's costs to launch. Some industry experts argued that the decision to forego reusability rendered the Ariane 6 "already obsolete" before it even entered service.

European officials, however, have defended the Ariane 6, citing the strategic need for independent access to space. They point to geopolitical disruptions, such as losing access to Russian Soyuz-ST rockets, as evidence of the necessity for a self-reliant European capability. Officials have also justified the rocket's lack of reusability by arguing that the relatively low number of planned launches would make such a feature economically unviable.

To support the programme, ESA's member states have agreed to subsidise the Ariane 6 with up to €340 million annually from its 16th to its 42nd flight, expected to occur by 2031. In exchange, governments will receive an 11% discount on launches.

References

1. Clark, Stephen. (2025-03-06). "When Europe needed it most, the Ariane 6 rocket finally delivered". Ars Technica.
2. Parsonson, Andrew. (2024-03-29). "CNES Boss Blames Contractors for Ariane 6 Being Too Expensive". European Spaceflight.
3. Smith, Rich. (2 June 2018). "Europe Complains: SpaceX Rocket Prices Are Too Cheap to Beat".
4. Lagier, Roland. (March 2021). "Ariane 6 User's Manual Issue 2 Revision 0". Arianespace.
5. Mathewson, Samantha. (2024-06-08). "At long last: Europe's new Ariane 6 rocket set to debut on July 9".
6. (22 October 2018). "Ariane 6 Vinci engine: successful qualification tests".
7. (7 November 2023). "Sortie de crise pour la fusée européenne Ariane-6".
8. [https://spacenews.com/next-ariane-6-launch-slips-to-early-2025/ Next Ariane 6 launch slips to early 2025], Jeff Foust, [[SpaceNews]], 8 November 2024.
9. Clark, Stephen. (2025-03-06). "When Europe needed it most, the Ariane 6 rocket finally delivered".
10. Amos, Jonathan. (3 December 2014). "Europe to press ahead with Ariane 6 rocket". [[BBC]].
11. "Ariane 6 - Ariane Group". [[ArianeGroup]].
12. Ajdin, Adis. (27 April 2021). "French pioneering sail-powered boxship".
13. (21 June 2023). "Wind-powered cargo ship completes its first transatlantic crossing".
14. (10 July 2018). "Largest-ever solid rocket motor poised for first hot firing". SpaceDaily.
15. (16 July 2018). "Successful first test firing for the P120C solid rocket motor for Ariane 6 and Vega C". [[ArianeGroup.
16. (16 July 2018). "Static Fire test for Europe's P120C rocket motor". [[NASASpaceflight]].
17. (August 5, 2024). "Ariane 6".
18. (17 December 2025). "ESA Member States Fund €100M Ariane 6 ASTRIS Kick Stage Evolution".
19. "Astris kick stage for Ariane 6".
20. "ASTRIS on Ariane 6".
21. (9 July 2024). "Successful maiden flight of Ariane 6 - Beyond Gravity contributed several products".
22. "Ariane 6 overview".
23. "Figure 5.3.1b C– Usable volume beneath payload fairing in single launch - Long fairing". [[Arianespace]].
24. (24 June 2024). "Europe aims to end space access crisis with Ariane 6's inaugural launch". [[SpaceNews]].
25. Foust, Jeff. (5 April 2022). "Amazon launch contracts drive changes to launch vehicle production". [[SpaceNews]].
26. "ESA-developed P120C solid rocket motor enters production".
27. (19 June 2024). "Avio Ships First Upgraded Ariane 6 Booster".
28. Parsonson, Andrew. (2025-01-10). "Testing of Key Ariane 6 Upgrade to Begin in March".
29. Guillermard, Véronique. (13 August 2024). "Comment Ariane 6 s'est mise en ordre pour doubler la fréquence de ses vols". [[Le Figaro]].
30. "ArianeGroup x Avio industrial partnership for P160C rocket motors".
31. "Composite LH2 tank Phoebus changing upper stage Arianea 6".
32. "PHOEBUS project makes progress on CFRP liquid oxygen, hydrogen upper stage tanks".
33. "Phoebus: Keeping cool with oxygen".
34. "Phoebus: Keeping the smallest molecule in the Universe contained".
35. (20 May 2020). "Ariane 6 maiden flight likely slipping to 2021". [[SpaceNews]].
36. Parsonson, Andrew. (29 October 2020). "ESA request 230 million more for Ariane 6 as maiden flight slips to 2022". [[SpaceNews]].
37. Berger, Eric. (21 June 2021). "The Ariane 6 debut is slipping again as Europe hopes for a late 2022 launch". [[Ars Technica]].
38. Rainbow, Jason. (13 June 2022). "Ariane 6 launch debut pushed into 2023". [[SpaceNews]].
39. Foust, Jeff. (19 October 2022). "Ariane 6 first launch slips to late 2023". [[SpaceNews]].
40. Foust, Jeff. (9 August 2023). "ESA confirms Ariane 6 debut to slip to 2024". [[SpaceNews]].
41. Stephen Clark. (21 November 2012). "European ministers decide to stick with Ariane 5, for now". Spaceflight Now.
42. (February 2015). "Ariane 6 PPH Architecture Critical Analysis - Second Iteration Loop".
43. (11 July 2013). "European Space Agency Reveals New Rocket Design". IEEE Spectrum.
44. (22 June 2017). "Full thrust on Europe's new rocket". [[BBC News]].
45. de Selding, Peter B.. (24 May 2013). "With Ariane 6 Launch Site Selected, CNES Aims To Freeze Design of the New Rocket in July". [[SpaceNews]].
46. Peter B. De Selding. (18 March 2014). "Questions Swirl around Future of Europe's Ariane Launcher Program". [[SpaceNews]].
47. Svitak, Amy. (10 March 2014). "SpaceX Says Falcon 9 To Compete For EELV This Year". [[Aviation Week & Space Technology]].
48. de Selding, Peter. (20 June 2014). "Airbus and Safran Propose New Ariane 6 Design, Reorganisation of Europe's Rocket Industry". [[SpaceNews]].
49. (5 July 2014). "Ariane 6 - Customers call the shots". [[BBC]].
50. (16 June 2014). "Safran-Airbus Group launcher activities agreement". [[Safran.
51. Michel Cabirol. (7 July 2014). "Faut-il donner toutes les clés d'Ariane 6 à Airbus et Safran?". [[La Tribune]].
52. Cabirol, Michel. (7 July 2014). "Privatisation d'Ariane 6 - comment Airbus et Safran négocient le "casse du siècle"". [[La Tribune]].
53. Cyrille Vanlerberghe. (8 July 2014). "Le choix d'Ariane 6 divise industriels et agences spatiales". Le Figaro.
54. (18 September 2014). "France raises heat on decision for next Ariane rocket". [[Expatica]].
55. Cyrille Vanlerberghe. (5 September 2014). "Ariane 6 - la version de la dernière chance". [[Le Figaro]].
56. de Selding, Peter B.. (24 September 2014). "ESA's Ariane 6 Cost Estimate Rises with Addition of New Launch Pad". [[SpaceNews]].
57. (22 September 2014). "ISS Expected To Take Back Seat to Next-gen Ariane as Space Ministers Meet in Zurich". [[SpaceNews]].
58. Peter B. De Selding. (2 December 2014). "ESA Members Agree To Build Ariane 6, Fund Station Through 2017". [[SpaceNews]].
59. (2022-09-19). "This Reusable Space Freighter Would 'Open the Door' to European Space Exploration".
60. (10 January 2016). "Europe in space, 2015 overview". Tech for Space.
61. (28 January 2016). "Ariane 6 design finalized, set for 2020 launch". Space Daily.
62. (28 January 2016). "Europe settles on design for Ariane 6 rocket". [[BBC News]].
63. de Selding, Peter B.. (7 April 2016). "Airbus Safran Launchers aims for "the discipline of the flow" in Ariane 6 integration". [[SpaceNews]].
64. Clark, Stephen. (24 June 2015). "Ariane 6 rockets likely to be assembled horizontally". Spaceflight Now.
65. Clark, Stephen. (16 December 2015). "Q&A with Stéphane Israël, chairman and CEO of Arianespace". Spaceflight Now.
66. (7 April 2016). "Ariane 6 project "in good shape"". BBC News.
67. Clark, Stephen. (13 August 2016). "Ariane 6 rocket holding to schedule for 2020 maiden flight".
68. Peach, Matthew. (6 November 2015). "Austrian researchers to adapt laser ignition for rockets". SPIE Europe.
69. Henry, Caleb. (9 July 2020). "ESA confirms Ariane 6 delay to 2021". [[SpaceNews]].
70. (3 December 2023). "1st launch of Europe's Ariane 6 rocket finally has June 2024 launch target".
71. Parsonson, Andrew. (5 June 2024). "Ariane 6 Maiden Flight Scheduled for 9 July".
72. (January 2019}} indicating that reusing the first stage was economically unviable as manufacturing ten rockets a year was cheaper and more feasible than recovery, refurbishment and loss of performance caused by [[Reusable launch vehicle). "Une version réutilisable d'Ariane 6 est à l'étude". Futura-Sciences.
73. Amos, Jonathan. (5 June 2015). "Airbus unveils "Adeline" re-usable rocket concept". [[BBC News]].
74. Clark, Stephen. (13 August 2016). "Ariane 6 rocket holding to schedule for 2020 maiden flight". Spaceflight Now.
75. Berger, Eric. (21 May 2018). "Ariane chief seems frustrated with SpaceX for driving down launch costs".
76. "Ariane 6, the new generation of European launch {{sic". Ariane Group.
77. Meddah, Hassan. (7 February 2017). "Vous avez aimé Ariane 6, vous allez adorer Ariane Next". [[L'Usine nouvelle]].
78. (May 2016). "Callisto, Véhicule Spatial Réutilisable". CNES.
79. Parsonson, Andrew. (19 July 2024). "ESA Explores Crewed Mission Capabilities for Ariane 6 Rocket". European Spaceflight.
80. Henry, Caleb. (8 January 2019). "Arianespace says full Ariane 6 production held up by missing government contracts". [[SpaceNews]].
81. Henry, Caleb. (27 February 2019). "OneWeb's first six satellites in orbit following Soyuz launch". [[SpaceNews]].
82. (7 May 2019). "Stéphane Israël, Arianespace: ordered first production batch of 14 Ariane 6 rockets yesterday for missions in 2021-23. #SATShow".
83. (9 October 2025). "ArianeGroup CEO Poached by French Train Maker".
84. (10 July 2024). "Ariane 6 launch returns in-house space access to Europe's armed forces".
85. (2022-04-07). "Arianespace signs its largest ever contract, with Amazon".
86. (6 November 2025). "Arianespace Aiming for as Many as Eight Ariane 6 Launches in 2026".
87. (3 April 2015). "Desire for Competitive Ariane 6 Nudges ESA Toward Compromise in Funding Dispute with Contractor". [[SpaceNews]].
88. de Selding, Peter B.. (4 November 2016). "ESA decision frees up full funding for Ariane 6 rocket". [[SpaceNews]].
89. Amos, Jonathan. (9 November 2016). "Full rocket funding unlocked by ESA". [[BBC News]].
90. Forrester, Chris. (23 January 2020). "EU loans €100m to Arianespace".
91. Miller, Katrina. (9 July 2024). "Europe Rejoins Space Race but New Rocket's Flight Ends in Anomaly". [[The New York Times]].
92. Posaner, Joshua. (10 July 2024). "How Europe's rocket program lost big to Elon Musk - The inside story".
93. Amos, Jonathan. (9 July 2024). "Ariane-6 first launch - Europe's rocket blasts off for first time".
94. Berger, Eric. (18 April 2023). "Europe's Ariane 6 rocket is turning into a space policy disaster".
95. Cross, Theresa. (3 July 2024). "Europe's Ariane 6 rocket set for maiden voyage amid stiff competition".
96. Posaner, Joshua. (1 July 2024). "Europe smarts as Elon Musk's SpaceX wins key satellite deal".
97. (July 10, 2024). "Europe "back in space" despite Ariane 6 debut glitch". [[Reuters]].
98. Castel, Frédéric. (24 June 2024). "Europe aims to end space access crisis with Ariane 6's inaugural launch".
99. (May 2016). "Who we are". [[Arianespace]].
100. (2 December 2014). "Ariane 6". CNES.
101. (23 January 2017). "Ariane 6". ESA.
102. "Ariane 6 series production begins with first batch of 14 launchers". Arianespace.