Limits RegistryPUBLIC RECORD
Limits RegistryESA's Gaia mission, launched in 2013, released its third data set (Gaia DR3) on 13 June 2022, containing positions and brightness for about 1.81 billion sources, with parallaxes and proper motions for about 1.46 billion — the largest and most precise three-dimensional census of the Milky Way. Gaia ended science observations in January 2025.
The question, scope, and sources behind this Registry record.
ESA's Gaia mission, launched in 2013, released its third data set (Gaia DR3) on 13 June 2022, containing positions and brightness for about 1.81 billion sources, with parallaxes and proper motions for about 1.46 billion — the largest and most precise three-dimensional census of the Milky Way. Gaia ended science observations in January 2025.
The largest number of stars and other sources with precise positions released in a single astrometric survey catalog.
Change a parameter to stress-test whether a proposed result is still inside the published specification. This is an audit aid, not a proof checker.
This record has no editable parameters. Read the formal question and assumptions before challenging it.
Current frontiers derived from accepted Claims.
An observed or demonstrated result; no opposing bound is implied.
The frontier is not sacred
Most progress starts with a disagreement that survives contact with evidence. If you can push the known lower bound up or pull the upper bound down, show us the work.
≥ when you have shown that at least this value is achievable.≤ when you have shown that anything above this value is impossible.No vibes. State the value, define the scope, and link the paper, proof, code, or reproduction that lets another person check it. Editors review every challenge before the public record changes.
Challenge this recordAssertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.
1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-LARGEST-3D-STAR-MAP
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Limits Registry. LR-LARGEST-3D-STAR-MAP. Largest three-dimensional map of the Milky Way. 2026.