Questions tagged [esa]

Questions related to structure, operations, missions, and facilities of the European Space Agency, an intergovernmental organization of 20 European states and Canada.

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Why is the RTEMS Real-Time Operating System often used in European space industry?

I was wondering recently about RTEMS. Why is this Real-Time Operating System (RTOS) widely use in the European space industry among other suitable alternatives like freeRTOS or VxWorks? Is this RTOS ...
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How does European jurisdiction in the ISS works?

This answer notes that participant nations have jurisdiction over their modules. So in a US module, you are in US jurisdiction, etc. Which means that in an European module, you are in European ...
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Why does ESA's TGO satellite not permanently serve as relay for Perseverance?

This question is about the orbital parameters of ESA's ExoMars Trace Gas Orbiter (TGO), so I am optimisitic that it belongs on astronomy SE. More specifically, it is about the orbital geometry of TGO ...
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Is there an European Space Agency's innovative advanced concept program?

I would like to know if there's an equivalent to NASA's NIAC at ESA. If that's the case, I would like to know if I can read some of these concept studies and what stages of approval they need.
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Is this digitally created ESA image of a Mars landscape incorrect to what the human eye would see?

This ESA image below of Noctis Labyrithus was created with data obtained from the High-Resolution Stereo Camera (HRSC), onboard ESA’s Mars Express, seems to depict a time near either sunrise or sunset....
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How do all the struts and crosses in the Orion Crew Capsule Service Module work together? What do each of these parts do?

The BBC's Europe to make more hardware for American Moon missions says that three more service modules for the Orion Crew Capsule have been ordered by NASA, bringing the total desired to six. I ...
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Does naming cargo space craft indicate intentions?

ESA committed to launching 5 ATV vehicles. All 5 were named. JAXA has committed to a limited number of HTV launches. And all have been named. Orbital has contracted for 8 launches, and seems to be ...
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What terminology is used to describe spacecraft in stationkeeping?

Forgive any inaccurate wording of this question. If a Soyuz craft which had been docked at the Zvezda module backed away from the ISS and remained at stationkeeping, would NASA, Roscosmos, or the ESA ...
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How exactly are the CaSSIS and HiRISE groups “very much working together right now in the scientific field”?

The BBC's CaSSIS mission: The camera capturing Mars' craters and canyons includes the curious reference: The instrument has a strong colour capability so the team combines its findings with those of ...
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Space exploration career opportunities for Europeans?

My goal is to establish a career in space exploration. What opportunities are there in Europe and how can I best prepare? I am willing to do all it takes to maximise my chances of working in this ...