Mercury Has a Radiation Belt After All—But It’s Super Wonky
Of all the solar system’s planets, Mercury is an oddball. Despite being closest to the Sun, it’s not the hottest planet. It quickly zips around the Sun every 88 days in the shape of a squashed oval but takes an excruciating 59 days to finish one spin on its axis.
- ▪Of all the solar system’s planets, Mercury is an oddball.
- ▪Despite being closest to the Sun, it’s not the hottest planet.
- ▪It quickly zips around the Sun every 88 days in the shape of a squashed oval but takes an excruciating 59 days to finish one spin on its axis.
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Story provenance
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Record
| Original publisher | Gizmodo |
| Canonical URL | https://gizmodo.com/mercury-has-a-radiation-belt-after-all-but-its-super-wonky-2000791955 |
| Publication time | Wed, 29 Jul 2026 11:30:58 +0000 |
| Retrieval time | 2026-07-29T12:01:07.496Z |
| Last seen | 2026-07-29T12:01:07.496Z |
| 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 | f7bbGVRwWXDd |
| 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)
WeSearch handling by dimension
| 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
Of all the solar system’s planets, Mercury is an oddball. Despite being closest to the Sun, it’s not the hottest planet. It quickly zips around the Sun every 88 days in the shape of a squashed oval but takes an excruciating 59 days to finish one spin on its axis. But wait, there’s more: it only holds onto a radiation belt less than half the time.cnx.cmd.push(function(){cnx({"playerId":"92b7b46b-43ed-4e0e-b21b-2c999302d9d7","settings":{"advertising":{"macros":{"AD_UNIT":"/23178111854/od.gizmodo.com/article","CHILD_UNIT":"article","POST_ID":"2000791955","POST_TYPE":"post","CHANNEL":"science","SECTION":"space","SUBSECTION":"","CATEGORIES":"space","TAGS":"magnetic-fields,mercury,planetary-science","NOP":"0"},"timeBeforeFirstAd":0}}}).render("cnx-player-main")}); Specifically, Mercury’s…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Gizmodo.
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