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| ==== Milestones and Results ==== | | ==== Milestones and Results ==== |
| The Boolean Chains project reached a significant milestone in May 2025: the search space for N=15, L=21 was exhausted. Over the course of the project, '''37,444,981,252,103,000 chains were generated''', consuming 2,139 days of computing time.<ref>{{cite web |url=https://boinc.berkeley.edu/central/ |title=Boolean Chains project reaches milestone |publisher=BOINC Central |date=31 May 2025 |access-date=2026-05-18}}</ref> The project was subsequently completed, with volunteers having supplied the equivalent of '''450 CPU-years''' of computing power.<ref name=central-news>{{cite web |url=https://boinc.berkeley.edu/central/ |title=BOINC Central project updates |publisher=University of California, Berkeley |date=24 March 2026 |access-date=2026-05-18}}</ref> | | The Boolean Chains project reached a significant milestone in May 2025: the search space for N=15, L=21 was exhausted. Over the course of the project, '''37,444,981,252,103,000 chains were generated''', consuming 2,139 days of computing time.<ref>{{cite web |url=https://boinc.berkeley.edu/central/ |title=Boolean Chains project reaches milestone |publisher=BOINC Central |date=31 May 2025 |access-date=2026-05-18}}</ref> The project was subsequently completed, with volunteers having supplied the equivalent of '''450 CPU-years''' of computing power.<ref name=central-news>{{cite web |url=https://boinc.berkeley.edu/central/ |title=BOINC Central project updates |publisher=University of California, Berkeley |date=24 March 2026 |access-date=2026-05-18}}</ref> |
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| === Cislunar Orbit Stability Analyzer (completed) ===
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| The '''Cislunar Orbit Stability Analyzer''' was the second project hosted by BOINC Central. It was conducted by researcher '''Lezhe Gao''' and computed the Jacobi constant for spacecraft orbits in the Earth–Moon system – a key metric for orbital stability analysis.<ref>{{cite web |url=https://boinc.berkeley.edu/central/projects.php |title=Computing projects – BOINC Central |publisher=University of California, Berkeley |access-date=2026-05-18}}</ref>
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| The application processed public simulation data from [[Lawrence Livermore National Laboratory]] (LLNL), aiming to map stable regions in cislunar space through a massive computational survey. Cislunar space – the volume between Earth's geosynchronous orbit and beyond the Moon, including the lunar Lagrange points – is of growing importance for space mission planning. Orbits there are influenced by the gravitational forces of the Sun, Earth, and Moon in ways that are typically difficult to predict.<ref>{{cite web |url=https://arxiv.org/pdf/2503.03892 |title=Predicting Cislunar Orbit Lifetimes from Initial Orbital Elements |publisher=arXiv |date=2025 |access-date=2026-05-18}}</ref>
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| The project was completed by early 2026 and led to a scientific paper currently under peer review. Like Boolean Chains, it made use of BOINC's BUDA framework.<ref name=central-news/>
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| ==== Related paper ====
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| * Yeager, Travis ''et al.'' [https://www.preprints.org/manuscript/202604.0498 ''Cislunar Orbit Stability Analyzer'']. Preprint, 2026.
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| * Higgins, Denvir ''et al.'' [https://arxiv.org/pdf/2503.03892 ''Predicting Cislunar Orbit Lifetimes from Initial Orbital Elements'']. ''Advances in Space Research'', 2025.
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| * Yeager, Travis ''et al.'' [https://arxiv.org/pdf/2512.11064 ''An Open Benchmark of One Million High-Fidelity Cislunar Trajectories'']. arXiv preprint, 2025.
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| == Technical Infrastructure == | | == Technical Infrastructure == |