nasa.gov
NASA
Last scanned Jul 29, 2026, 11:00 AM · 16 views
Overall score
Great
Summary
NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research. This website uses WordPress. SEO is good (75/100) and accessibility is excellent (90/100). Security scores good (85/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.
NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.
Top issues to fix
7 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
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-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+1 more issue — details in the sections below.
SEO
4 issue(s) found
Performance
324 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
-3 overall since Jul 15, 2026
- Overall
- 84
- SEO
- 75
- Security
- 85
- Performance
- 90
- Accessibility
- 90
Organization
Company details published in this site's own structured data.
NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.
Meta tags
- Title
- NASA
- Description
- NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.
- Canonical
- https://www.nasa.gov/
- Language
- en-US
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large
- Manifest
- https://www.nasa.gov/wp-content/plugins/nasa-hds-core-setup/assets/favicons/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- nasa.gov
- Valid from
- Jun 11, 2026
- Valid to
- Sep 9, 2026
- Days until expiry
- 41
- SAN domains
- nasa.gov, www.nasa.gov
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 12 · H3 84
Links
121 internal · 78 external · 20 broken
Images
72 total · 0 missing alt
Scripts / Styles
33 scripts · 3 stylesheets
JS / CSS size
14.6 KB · 40.2 KB
Page size
332 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- No H1 heading found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://nasa.gov
- Final URL
- https://www.nasa.gov/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 318 ms
- HTML size
- 332 KB
- Redirect chain
- https://nasa.gov → https://www.nasa.gov/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does nasa.gov use?
- nasa.gov is built with WordPress, jQuery, Nginx.
- Is nasa.gov secure (HTTPS)?
- Yes. nasa.gov uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 9, 2026.
- Who hosts nasa.gov?
- Hosting provider information for nasa.gov is not available yet.
- What is nasa.gov's SEO score?
- nasa.gov scored 75/100 for SEO in the latest analysis (fair).
- What is nasa.gov's overall website score?
- nasa.gov has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
- Has nasa.gov's score changed over time?
- nasa.gov's overall score has declined by 3 points (from 87 to 84) since Jul 15, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card