SPACIOUS Open Call to the Community

SPACIOUS is officially launching its Open Call for Resources from 23 September  to 16 November 2025, after an Initial Call for Early Test Users issued last July to prepare the community and refine science-driven use cases.

Goal of the Open Call

The SPACIOUS Open Call aims to engage the community through real science cases that will test the current SPACIOUS environment. We are looking for projects that:

  • Present a strong scientific motivation involving large and complex datasets
  • Rely on data-intensive, rather than compute-intensive (traditional HPC), workflows
  • Benefit from SPACIOUS scalability and modern cloud-native architectures

The SPACIOUS infrastructure will allow developing between 4 and 6 external challenges (depending on the requested resources). 

Selection priorities:

  • Use of ESA’s mission data, particularly Gaia and EUCLID data, feeding back into ESA archives and the preparation of future ESA missions, will be a priority for the selection
  • Highest scientific impact
  • Publication of the results in refereed open access journals is mandatory. At least one refereed publication for each project is expected
  • Sharing developed codes in Open Access
  • Compliance with the Horizon Europe Open Data policy for results

Available Resources

Selected projects will receive:

  • Dedicated computing and storage resources: we are aiming to host large projects consuming about 1-2 million CPU hours and with storage needs up to a few hundreds of terabytes. Smaller projects can be considered if they constitute a significant scientific challenge or if they significantly contribute to the proof of concept of SPACIOUS. 
  • Work with reference datasets such as Gaia, Pan-STARRS DR1, 2MASS, ALLWISE, and more. Additional datasets may be considered upon request
  • A modern analytical environment using tools like Python notebooks, Spark, and Dask for scalable analysis
  • Platform support and guidance from the SPACIOUS team

How to Apply 

Interested teams will submit their application by filling the form below.

The application should be no longer than 4 pages and must include:

  • Scientific motivation
  • Data and analysis requirements
  • Resource requirements

For questions or inquiries, please visit the SPACIOUS Contacts page

What Comes Next

The technical feasibility and resource requirements of the proposals will be assessed by the SPACIOUS technical team. The proposals will be evaluated by the Resources Allocation Committee (RAC) which will select the key projects to be run in the SPACIOUS infrastructure.

Open Call Application Form

Drop your file here or click here to upload You can upload up to 1 files (15 MB max).
This form is carried out by the interested party and thereby gives their full consent to the processing of their personal data. These data will be treated with the utmost confidentiality and with the sole purpose of managing the relationships we establish with applicants.