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Site Info - Nasa.gov

Overview of web technologies used by Nasa.gov.

Website Background

NASA
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.

Description on Homepage

NASA Langley Research Center

Description from Alexa

Number 642 of all websites according to Alexa

Popularity rank

CountryVisitorsCountry Rank
United States41.3%364
India8.5%766
United Kingdom3.5%640
CityVisitorsCity Rank
Los Angeles, CA, US3.3%356
New York, NY, US2.8%551
San Francisco, CA, US2.3%392

Main visitors locations

Drupal is an open source content management system written in PHP, originally developed by Dries Buytaert.

Drupal 7
(7% of sites use a newer version)

PHP is a popular scripting language for creating web pages.

PHP

JavaScript is a lightweight, object-oriented, cross-platform scripting language, mainly used within web pages.

JavaScript

jQuery is a JavaScript library that simplifies HTML document traversing, event handling, animating and Ajax interaction. Originally developed by John Resig.

jQuery
(used until recently)

HTML5 is the fifth revision of the HTML standard.

HTML5

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

UTF-8

External Cascading Style Sheets define style rules in a separate CSS file.

External CSS

Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.

Embedded CSS

Gzip (GNU zip) is a file compression algorithm.

Gzip Compression

The Internet Protocol version 6 (IPv6) provides amongst others a vastly larger address space than the preceding version 4. We consider a website to support IPv6 if a 128-bit address is assigned to it, regardless of the content delivered at that address.

IPv6

HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.

HTTP Strict Transport Security

The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.

Default subdomain www

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

Default protocol https

The Open Graph protocol, originally developed by Facebook, is an RDFa-based format that enables any web page to become a rich object in a social graph.

Open Graph

Twitter Cards enable automatic attachment of photos, videos and media elements to Tweets.

Twitter Cards

Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.

Generic RDFa

Comodo provides IT services, software, and SSL certificates under various brand names.

Comodo

Amazon is a US-based e-commerce and cloud computing provider.

Amazon
hosting info based on data from ipinfo.io

Limelight is a content delivery network headquartered in USA.

Limelight

United States Government

.gov

United States
Germany
Japan
Italy
United Kingdom
(used until recently)
Australia
(used until recently)

English

Technology Score

The technology score rates a site based on its technologies in a range from 0 to 100. It consists in a popularity score (how many sites use the same technologies), a traffic score (how much traffic have other sites using the same technologies) and a version score (how many sites use more recent technology versions). Quality alerts also affect the rating.

TotalPopularity TrafficVersion
Technology Score62605793
Content Management Systems56215593
Server-side Programming Languages679143
Client-side Programming Languages7510051
Markup Languages688353
SSL Certificate Authorities596256
Reverse Proxy Services44484

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