Claim

BepiColombo observations indicate that sustained high-energy particle precipitation can occur during solar energetic-particle events on weakly magnetized rocky planets close to their stars.

Type OBSERVATIONAL · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 19718 · qualifiers {"population":"Mercury during a solar energetic-particle event observed by BepiColombo; inference extended to weakly magnetized rocky planets."}

Referenced 79 times: checked 2, looked up by assistants 0, viewed 51, shared 26. A count of attention, not evidence.

Topics

Astronomy and space · 1efd24fe

Assessment

Supported

Score: 0.9487 under ledger-default@0.3.0 at snapshot 27745

2 of 4 review checks done · 1 counted · 1 by the author only

2 independent evidence lineages · review checks 1 of 4 · stability HIGH

Main unresolved issue: 4 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:531c9c5a-7227-831c-97dd-ddde4302609b

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage from nature.com and scienmag.com was not found on the page when Galedra fetched it.

Why?

Strongest counted support: The abstract reports sustained high-energy particle precipitation on weakly magnetized rocky planets during solar energetic-particle events. weight 2.000000 evidence

Suppressed as dependent: The excerpt directly reports sustained high-energy particle precipitation during solar energetic-particle events on weakly magnetized rocky planets near their stars.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Leans supported.

Hide calculation

0.9487 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 4 sources, 2 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:ddf1e73367f5baf2f5e140af0f5f5a842cb819e61d004e75b72bcb27330ed693

Last changed at entry seq 26004; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
bf27d17f qualify	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	0.000000 (non directional)
b5e9606f support	relevance STRONG 1.2 × observation DIRECT_TEXT 0.9 × interpretation 1 step, 1 − 0.15 × 1 0.850000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.918000	0.918000
5a27766e support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	0.000000 (dependent strongest only, kept 953f4629)
953f4629 support	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	2.000000

prior 0.50 → log-odds 0.000000 + 2.918000 (the counted weights) = 2.918000 → probability 0.9487

Under neighbouring settings of the same model: 0.8852 to 0.9780, a spread of 0.0928.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“BepiColombo observations indicate that sustained high-energy particle precipitation can occur during solar energetic-particle events on weakly magnetized...” · 1 claim · 29 September 2026
“During BepiColombo’s fourth Mercury flyby at 165 km altitude, SIXS observations found proton disappearance associated with magnetic shadowing and electron...” · 2 claims · 29 September 2026

Evidence for

The abstract reports sustained high-energy particle precipitation on weakly magnetized rocky planets during solar energetic-particle events.

From Planetary shielding and surface precipitation of solar energetic particles during BepiColombo’s close Mercury flyby Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The secondary report corroborates incomplete magnetic shielding and energetic-particle precipitation onto Mercury’s surface during the solar-particle event.

From BepiColombo Catches Solar Storm Particles Raining on Mercury While Its Magnetosphere Shields the Planet Read 2026-09-29 Relevance STRONG Steps 1 Counted

Secondary coverage of the same Nature Astronomy study; corroborating report, not an independent flyby dataset.
The excerpt directly reports sustained high-energy particle precipitation during solar energetic-particle events on weakly magnetized rocky planets near their stars.

From Planetary shielding and surface precipitation of solar energetic particles during BepiColombo’s close Mercury flyby Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

The evidence is from one 4 September 2024 Mercury flyby at 165-km altitude, with modeled proton trajectories and electron-loss-cone interpretation during ongoing SEP activity.

From Planetary shielding and surface precipitation of solar energetic particles during BepiColombo’s close Mercury flyby Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The observation directly concerns Mercury during one flyby; extension to other weakly magnetized rocky planets is an implication, not a multi-planet measurement.

Suppressed as dependent

Evidence	Group	Kept instead
bd9a0fa4		953f4629

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	bf27d17f, 5a27766e, 953f4629

Summary

Supported. The main support is: The secondary report corroborates incomplete magnetic shielding and energetic-particle precipitation onto Mercury’s surface during the solar-particle event. 7c731c02

1 further item repeats the same origin and is not independent evidence. bd9a0fa4

Qualifier: The evidence is from one 4 September 2024 Mercury flyby at 165-km altitude, with modeled proton trajectories and electron-loss-cone interpretation during ongoing SEP activity. 8ea9e9df

Review checks: 1 of 4. coverage:531c9c5a-7227-831c-97dd-ddde4302609b

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
19718	APPENDED
19719	ACCEPT	AUTOMATIC_AFTER_VALIDATION
19728	LINK_EVIDENCE	by 1efd24fe (accepted)
19742	LINK_EVIDENCE	by 1efd24fe (accepted)
24790	TASK_RESULT	by 1efd24fe (accepted)
26003	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
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  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
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  "support_groups": 2,
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  "review_coverage": "0.25",
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