webbtelescope.org
James Webb Space Telescope - NASA Science
Last scanned Jul 27, 2026, 10:43 AM
Overall score
Excellent
Summary
Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. This website uses WordPress hosted on AUTOMATTIC - Automattic, Inc, US. SEO is excellent (100/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance good (80/100).
Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the history of our Universe.
- United States
- Hosted on AUTOMATTIC - Automattic, Inc, US
Top issues to fix
2 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
SEO
0 issue(s) found
Performance
874 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the history of our Universe.
Meta tags
- Title
- James Webb Space Telescope - NASA Science
- Description
- Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the history of our Universe.
- Canonical
- https://science.nasa.gov/mission/webb/
- 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://science.nasa.gov/wp-content/plugins/nasa-hds-core-setup/assets/favicons/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AUTOMATTIC - Automattic, Inc, US
- CDN provider
- —
- IP address
- 192.0.66.161
- ASN
- AS2635 (AUTOMATTIC - Automattic, Inc, US)
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
- science.nasa.gov
- Valid from
- Jun 30, 2026
- Valid to
- Sep 28, 2026
- Days until expiry
- 62
- SAN domains
- science.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 1 · H2 26 · H3 77
Links
147 internal · 120 external · 0 broken
Images
90 total · 0 missing alt
Scripts / Styles
66 scripts · 7 stylesheets
JS / CSS size
254 KB · 344 KB
Page size
423 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
No SEO issues detected.
Accessibility issues
No accessibility issues detected.
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://webbtelescope.org
- Final URL
- https://science.nasa.gov/mission/webb/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 866 ms
- HTML size
- 423 KB
- Redirect chain
- https://webbtelescope.org → https://science.nasa.gov/mission/webb → https://science.nasa.gov/mission/webb/
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Frequently asked questions
- What technology does webbtelescope.org use?
- webbtelescope.org is built with React, WordPress, jQuery, Google Analytics, Nginx.
- Is webbtelescope.org secure (HTTPS)?
- Yes. webbtelescope.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 28, 2026.
- Who hosts webbtelescope.org?
- webbtelescope.org is hosted on AUTOMATTIC - Automattic, Inc, US.
- What is webbtelescope.org's SEO score?
- webbtelescope.org scored 100/100 for SEO in the latest analysis (excellent).
- What is webbtelescope.org's overall website score?
- webbtelescope.org has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.
- Is webbtelescope.org hiring?
- webbtelescope.org has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card