earthsky.org
EarthSky | Updates on your cosmos and world
Last scanned Jul 25, 2026, 4:25 PM · 2 views
Overall score
Great
Summary
This website uses WordPress hosted on Cloudflare behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (90/100). Security scores fair (70/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on Cloudflare
Top issues to fix
6 issues found · 4 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
1 broken link on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
2 issue(s) found
Performance
58 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Source: https://earthsky.org/contact-us/
Meta tags
- Title
- EarthSky | Updates on your cosmos and world
- Description
- Canonical
- https://earthsky.org/
- Language
- en-US
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- max-image-preview:large
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.26.10.45
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- earthsky.org
- Valid from
- Jul 9, 2026
- Valid to
- Oct 7, 2026
- Days until expiry
- 73
- SAN domains
- earthsky.org, *.earthsky.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 1 · H3 14
Links
42 internal · 11 external · 1 broken
Images
52 total · 0 missing alt
Scripts / Styles
43 scripts · 9 stylesheets
JS / CSS size
60.5 KB · 29.9 KB
Page size
145 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 8
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Missing meta description
- No H1 heading found
Accessibility issues
- No H1 heading found
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://earthsky.org
- Final URL
- https://earthsky.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 56 ms
- HTML size
- 145 KB
- Redirect chain
- https://earthsky.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does earthsky.org use?
- earthsky.org is built with WordPress, jQuery, Google Analytics.
- Is earthsky.org secure (HTTPS)?
- Yes. earthsky.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 7, 2026.
- Who hosts earthsky.org?
- earthsky.org is hosted on Cloudflare, behind Cloudflare CDN.
- What is earthsky.org's SEO score?
- earthsky.org scored 80/100 for SEO in the latest analysis (great).
- What is earthsky.org's overall website score?
- earthsky.org has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
- Is earthsky.org hiring?
- earthsky.org has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card