Grand Tack Hypothesis
The grand tack hypothesis suggests that Jupiter initially formed at 3.5 AU from the Sun and migrated inward to 1.5 AU before reversing direction due to interactions with Saturn. This migration pattern has implications for the formation of the Solar System, particularly in explaining the mass of Mars and the characteristics of the asteroid belt. The hypothesis posits that Jupiter's movements shaped the distribution of planetesimals and influenced the formation of other celestial bodies.
- ▪Jupiter formed at a distance of 3.5 AU from the Sun before migrating inward to 1.5 AU.
- ▪The migration of Jupiter was reversed by capturing Saturn in an orbital resonance.
- ▪The grand tack hypothesis helps explain the small mass of Mars and the characteristics of the asteroid belt.
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Record
| Original publisher | Wikipedia |
| Canonical URL | https://en.wikipedia.org/wiki/Grand_tack_hypothesis |
| Publication time | Tue, 28 Apr 2026 12:11:50 +0000 |
| Retrieval time | 2026-04-28T12:24:31.929Z |
| Last seen | 2026-04-28T12:24:31.929Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | z02Lc2vnoi4l |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Toggle the table of contents Grand tack hypothesis 14 languages العربيةDeutschEspañolSuomiFrançaisHrvatskiItaliano日本語한국어МакедонскиРусскийSimple EnglishTagalog中文 Edit links ArticleTalk English ReadEditView history Tools Tools move to sidebar hide Actions Read Edit View history General What links hereRelated changesUpload filePermanent linkPage informationCite this pageGet shortened URL Print/export Download as PDFPrintable version In other projects Wikidata item Appearance move to sidebar hide From Wikipedia, the free encyclopedia Theory of early changes in Jupiter's orbit Jupiter might have shaped the Solar System on its grand tack In planetary astronomy, the grand tack hypothesis proposes that Jupiter formed at a distance of 3.5 AU from the Sun, then migrated inward to 1.5 AU, before…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Wikipedia.
