Look up for a blue moon on May 31
A blue moon will occur on May 31, 2026, marking the second full moon of the month. This event is known as a calendrical blue moon, which happens approximately every 2.5 years. Additionally, this blue moon will be classified as a micromoon, appearing smaller due to its increased distance from Earth.
- ▪The blue moon will reach peak illumination at 4:46 a.m. EDT on May 31.
- ▪Calendrical blue moons occur when there are two full moons in a single calendar month.
- ▪This month's blue moon will be 252,360 miles away from Earth, making it a micromoon.
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Record
| Original publisher | Popular Science |
| Canonical URL | https://www.popsci.com/science/blue-moon-may-2026/ |
| Publication time | Fri, 29 May 2026 10:00:00 -0400 |
| Retrieval time | 2026-05-29T14:05:00.678Z |
| Last seen | 2026-05-29T14:05:00.678Z |
| 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 | None |
| Cluster logic | Not yet clustered, or no peer story found in the clustering window. |
| 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
A ‘Super Blue moon’ rose in the skies of the Dutch city of Nijmegen during the night from August 31st to September 1st, 2023. Photo by Romy Arroyo Fernandez/NurPhoto via Getty Images Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. Email address Sign up Thank you! By signing up, you confirm you are 16+, will receive newsletters and promotional content and agree to our Terms of Use and acknowledge the data practices in our Privacy Policy. You may unsubscribe at any time. This weekend, Earth will be treated to a nice blue moon. Our planet’s only natural satellite won’t put on a pleasant azure hue (indeed, blue moons have nothing to do with color).
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Popular Science.
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