What powers earthsky.org?
Last seen Jun 2026 · 53 technologies across 21 categories
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Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| pleiades star cluster | #2 | 9,800 |
| how fast does the earth rotate | #2 | 9,800 |
| perseid meteor | #3 | 8,800 |
| geminid meteor | #1 | 8,200 |
| how fast does the world spin | #1 | 7,500 |
| perseid meteor showers 2024 | #1 | 6,700 |
| moon phases | #6 | 6,200 |
| andromeda galaxy | #3 | 5,900 |
| waxing crescent moon | #2 | 4,900 |
| orion the hunter constellation | #2 | 4,900 |
| utc to time | #7 | 4,700 |
| orion nebula | #4 | 4,000 |
| great nebula | #4 | 4,000 |
| waning gibbous | #3 | 3,900 |
| ursa minor little dipper | #2 | 3,600 |
| waning crescent moon | #2 | 3,600 |
| scorpius constellation | #2 | 3,600 |
| proxima centauri | #2 | 3,600 |
| yellowstone | #67 | 3,500 |
| utc time | #11 | 3,300 |
| orion constellation stars | #13 | 3,200 |
| sirius b star system | #3 | 3,200 |
| draconids | #1 | 3,000 |
| regulus star | #2 | 2,900 |
| planets in view tonight | #1 | 2,800 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 81% phone
- 16% desktop
- 2% tablet
United States
India
United Kingdom
Canada
Australia
Philippines
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
7.94 / 10 · ranked #8,592 of all domains
3,967 referring domains · OpenPageRank
Search traffic
497,500 est. monthly organic visits (US)
134,268 keywords in Google's top 30
Core Web Vitals
| LCP | 1.9 s |
| INP | 125 ms |
| CLS | 0.05 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 8.7 MB · 414 requests
- WordPress theme: earthsky-testing-6c8e0a978c578089f4b8b6-2 · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| earthsky.org | 30 |
| www.earthsky.org | 22 |
| ecp.earthsky.org | 21 |
Full technology history →
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Recent changes
- dropped Adobe Audience Manager Jun 2026
- dropped TripleLift Jun 2026
- dropped Amazon ALB May 2026
- dropped Amazon Web Services May 2026
- dropped 33Across Apr 2026
- dropped Microsoft ASP.NET Apr 2026
- detected 33Across Feb 2026
- dropped Confiant Jan 2026
- detected TripleLift Jan 2026
- dropped 33Across Dec 2025
- detected Confiant Nov 2025
- dropped TripleLift Nov 2025
- detected Microsoft ASP.NET Oct 2025
- dropped AppNexus Sep 2025
- dropped Confiant Sep 2025
- dropped Microsoft ASP.NET Sep 2025
- detected Redis Sep 2025
- detected Redis Object Cache Sep 2025
- detected 33Across Aug 2025