Gaia Data Release 4 scheduled
ESA has scheduled Data Release 4 for December 2026: the first release covering all data types for the full nominal five and a half year mission, described as around 500 terabytes, with the final legacy catalogue not expected before the end of the decade. This is a published programme schedule, not a prediction about what the data will show. As of August 2026 it has not yet occurred and the date should be re-checked.
Planned — a programme target or declared plan, from a source that declared it. Never a prediction.
Subjects
- Gaia (ESA astrometric survey) · mission · Sun-Earth L2, then heliocentric orbit · not located
- Hertzsprung-Russell diagram · model · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
Gaia end of observations and spacecraft passivation
Supports the 15 January 2025 end of science observations, the 27 March 2025 passivation, the December 2026 planned date for Data Release 4 and the description of DR4 as covering all data types for the full nominal mission. The pages were not fetched because the domain was blocked; content comes from search summaries of those ESA pages.
European Space Agency (ESA Cosmos) · 2025 · Partly verified
ESA Cosmos, "Gaia spacecraft end of observations" and "Spacecraft passivation", cosmos.esa.int/web/gaia
Recorded on Gaia (ESA astrometric survey)
- Hertzsprung and Russell independently plot luminosity against temperature
- Gaia stops observing
- Gaia Data Release 4 scheduled
Related
Related because they share a subject in the Atlas — never because the text looks similar.
- Gaia stops observing · 2025-01-15
- Hertzsprung and Russell independently plot luminosity against temperature · 1911-1913