Place. The Euclid Science Satellite has reached major milestones

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The Euclid satellite will soon be relocated to the Thales Alenia space site in Cannes Thales Alenia space

Euclid Satellite Integration Completed as Upcoming Transfers from Turin to Thales Alenia Space Ear Facilities

Thales Alenia Space, a joint venture between Thales (67%) and Leonardo (33%), has successfully completed all integration activities for the Euclid satellite at its site in Turin, Italy. The satellite will soon be transferred to the Thales Alenia space site in Cannes, where it will undergo a final environmental test before launching.

Euclid is a technological gem that will play a key role in the European Space Agency’s (ESA) ambitious scientific missions, contributing to several national space agencies, most notably the French (CNES) and Italian (ASI). This mission was designed to unravel the mysteries of dark energy and dark matter.

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Euclid is a technological gem © Thales Alenia space

The Euclid satellite, for the first time in its launch configuration, is equipped with all its onboard subsystems and scientific instruments, the Visual Imager VIS (Visual Instrument) and the nearby Infrared Spectrometer NISP (Near Infrared Spectrometer and Photometer), both individually and integrated. In addition, the telescope, previously assembled at the Airbus Defense and Space Toulouse site, was inserted into service modules with solar panels and antennas.

Thales Alenia Space Italy is the main contractor for the Euclid mission and responsible for the satellite’s service modules, while leading an industry team consisting of more than 120 European partner companies.

How did the universe come into being, and why did the gravitational pull of all the matter in it decrease rather than accelerate its expansion? In an attempt to answer this question, Euclid, one of the pioneers of modern cosmology, will map a large-scale structure of the universe 10 billion light-years, hoping to reveal the history of its expansion and the history of cosmic evolution. The structure of the last three quarters of its existence.

I would like to congratulate the extraordinary collaborative work done in recent years by both the project team and the entire industry consortium to facilitate ESA’s Euclid mission. Before mentioning, Walter Cugno, Thales Alenia, Vice President of Exploration and Science in Space, announced: The coordination and punctuality of this teamwork confirms Thales Alenia Space’s ability to lead the performance of extremely complex scientific missions. The contributions of Thales Alenia Space from Spain, Belgium and France have made it possible to achieve this important milestone in the program of continuing environmental testing in the ear before the launch campaign for this high mission.


Communication from Earth is 1.5 million kilometers

During his six-year mission, Euclid will map two billion galaxies and the corresponding Dark Matter 3D in the most observable sky outside our Milky Way. The entire study provided 150,000 high-definition images and associated chromatic and spectral information, or about petabytes of data to download.

Thanks to the K-band radio frequency data transmission system, this huge amount of data will be transmitted by satellite from its orbit around Lagrange Point L2 of the Sun-Earth system, 1.5 million kilometers from Earth. (26 GHz), with ESA deep space mission tracking stations with stearable parabolic antennas 35 m in diameter located in Sebreros, Spain and Malarguু, Argentina. The Euclid platform integrates an X-band system to control and monitor and measure its distance from Earth.

Industry contributions to the Euclid program

Among the major subcontractors, Airbus Defense and Space, Toulouse, is responsible for the payload module featuring telescopes and optical benches where the two instruments have sensors for VIS and NISP. These were created by an international consortium led by the Institute d’Astrophysics de Paris (IAP), which is a federation

Ten French research laboratories affiliated with the Commissionerate for Atomic Energy and Alternative Energy (CEA) in collaboration with the National Center for Scientific Research (CNRS) and CNES.

Thanks to the cold gas micro-thruster produced by Leonardo, ESA will be able to control the orientation of the satellite in orbit to correct the observation aspect. Data related to the telescope’s vision will also come from the Leonardo sensor: FGS (Fine Guidance Sensor). Mounted directly on the telescope, this ultra-accurate star tracker will ensure absolute alignment between the telescope axis and the reference star. Leonardo is also supplying solar panels that will power all on-board systems.

Euclid’s large grain-placeable and steerable K-band antennas benefit from the unique expertise of the Thales Alenia space in Italy in space exploration missions such as Cassini-Hygens (Saturn), Bepiclombo (Mercury) and Exomers (Mars). Italy’s Thales Alenia Space also supplied the X-band DST transponder, while Belgium’s Thales Alenia Space X and K built the Traveling Wave Tube Amplifier (TWTA).

Finally, Thales Alenia Space in Spain has provided satellite communication systems based on long and rich experience in data transmission systems for all orbital and all types of space missions.

About Thales Alenia Space

With over forty years of experience and a unique diversity of skills, talents and cultures, the architects of Thales Alenia Space have designed and provided innovative solutions for telecommunications, navigation, earth observation and environmental management, exploration, science and orbital infrastructure. Organizations, governments and businesses rely on Thales Alenia space to design, build and deliver satellite systems: to determine geolocation and to connect people and objects anywhere in the world; Observe our planet; Optimize the use of Earth’s resources and our solar system’s resources. Thales Alenia Space is sure that space brings a new dimension to humanity to build an advanced and sustainable life on Earth. A joint venture between Thales (67%) and Leonardo (33%), Thales Alenia Space also forms a space alliance with Telespazio to offer a full range of solutions, including services. Thales Alenia Space achieved a turnover of around 1 2.150 billion in 2021 and employs about 8,900 people in 10 countries, including 17 sites in Europe and one factory in the United States.


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