Checking results for: stellarium.org
Additional info for https://stellarium.org
Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 185.199.110.153 |
| Server Software | GitHub.com |
| CDN | CDN (HIT) |
| Compression | gzip |
|
🔒 🟡 Mixed Content (6 HTTP resources) | The page is served over HTTPS but loads 6 resource(s) over HTTP. This may be blocked in modern browsers. |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 185.199.110.153
Server Software GitHub.com
CDN CDN (HIT)
Compression gzip
🔒 🟡 Mixed Content (6 HTTP resources) The page is served over HTTPS but loads 6 resource(s) over HTTP. This may be blocked in modern browsers.
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Performance
| DNS Lookup | 6.3 ms |
| TCP Connect | 7.5 ms |
| TLS Handshake | 5.2 ms |
| Time To First Byte (TTFB) | 126.5 ms |
| Content Download | 0.2 ms |
| Total Response Time | 126.7 ms |
DNS Lookup 6.3 ms
TCP Connect 7.5 ms
TLS Handshake 5.2 ms
Time To First Byte (TTFB) 126.5 ms
Content Download 0.2 ms
Total Response Time 126.7 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Stellarium Astronomy Software |
| Meta Description | Stellarium is a planetarium software that shows exactly what you see when you look up at the stars. It's easy to use, and free. |
Title Stellarium Astronomy Software
Meta Description Stellarium is a planetarium software that shows exactly what you see when you look up at the stars. It's easy to use, and free.
Detected Technologies
| Technology | Google Analytics Google Tag Manager PHP |
Technology Google Analytics Google Tag Manager PHP
HTTP Headers
| Server
| GitHub.com |
| Content-type
| text/html; charset=utf-8 |
| Last-modified
| Tue, 21 Jul 2026 17:03:18 GMT |
| Access-control-allow-origin
| * |
| Etag
| W/"6a5fa656-605c" |
| Expires
| Tue, 21 Jul 2026 17:34:30 GMT |
| Cache-control
| max-age=600 |
| Content-encoding
| gzip |
| X-proxy-cache
| MISS |
| X-github-request-id
| B85C:3D0EF8:161DD98:166C58F:6A5FAB4D |
| Accept-ranges
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| Age
| 0 |
| Date
| Wed, 22 Jul 2026 04:35:33 GMT |
| Via
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| X-served-by
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| X-cache
| HIT |
| X-cache-hits
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| X-timer
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| Vary
| Accept-Encoding |
| X-fastly-request-id
| 3eef748e45416b4daba6afe8cdf88ebbc4b24b69 |
| Content-length
| 7830 |
Meta Tags
| X-UA-Compatible | IE=edge |
| Viewport | width=device-width, initial-scale=1 |
| Description | Stellarium is a planetarium software that shows exactly what you see when you look up at the stars. It's easy to use, and free. |
| Keywords | Stellarium, planetarium, astronomy, software, stars, planets, constellations, meteors, universe, open source, free software, astro, freeware, download, stars, planets, realistic, software, sky, program, scientific, educational, free, real, time, Windows, Linux, Apple, Mac, GPL, milky way, moon, mercury, venus, mars, earth, venus, jupiter, saturn, sun, real time, 3D, openGL, graphic, GL, chart, map, twinkle, photo-realistic, brightness, screenshot |
Server GitHub.com
Content-type text/html; charset=utf-8
Last-modified Tue, 21 Jul 2026 17:03:18 GMT
Access-control-allow-origin *
Etag W/"6a5fa656-605c"
Expires Tue, 21 Jul 2026 17:34:30 GMT
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Content-encoding gzip
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X-UA-Compatible IE=edge
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Description Stellarium is a planetarium software that shows exactly what you see when you look up at the stars. It's easy to use, and free.
Keywords Stellarium, planetarium, astronomy, software, stars, planets, constellations, meteors, universe, open source, free software, astro, freeware, download, stars, planets, realistic, software, sky, program, scientific, educational, free, real, time, Windows, Linux, Apple, Mac, GPL, milky way, moon, mercury, venus, mars, earth, venus, jupiter, saturn, sun, real time, 3D, openGL, graphic, GL, chart, map, twinkle, photo-realistic, brightness, screenshot
