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Lift Off News: Space Exploration Updates

Stay informed with the latest news on space exploration. This RSS feed covers launches, missions, and discoveries in the realm of outer space exploration.

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Lift Off News: Space Exploration Updates

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  1. RSS Really Simple Syndication

  2. RSS is a web content syndication format • RSS documents are XML and must conform to the xml 1.0 recommendation • RSS files are used to keep subscribers informed about the most recent updates to news, blogs, discussion groups, site postings, etc. Overview

  3. First began as scripting news in 1997 • RSS 0.90 was designed for use with Netscape 1999(had an RDF header) • RSS 0.91 (1999) more standard, no RDF header • RSS 0.92 which is 0.91 with optional elements • RSS 1.0, Developed by a private group at O’Reilly –again has an RDF header (2000) • RSS 2.0 –basically a modification of 0.92 (2003) Versions of RSS

  4. The root element of the document is <rss version=“2.0”> It has no namespaces, though namespaces can be added to accommodate extensions to rss and inclusion of other xml vocabularies The <rss> element has a single child, the <channel> element Basics of RSS 2.0

  5. The <channel> element can contain several elements. Most contain metadata about the rss feed • Three elements are required and several are optional • Additionally the <channel> element contains one or more <item> elements • The <item> elements contain the description and links of the syndicated content The <channel> Element

  6. Required Elements of <channel>

  7. Optional Elements of <channel>

  8. Optional Elements Continued

  9. Optional Elements (End)

  10. A channel many contain any number of items • The items may represent a link to a story or a resource or they may be complete in themselves • All child elements of <item> are optional however at minimum at least a title or description must be present The <item> Element

  11. Elements of <item>

  12. Elements of <item> Continued

  13. <?xml version="1.0"?> <rss version="2.0”> <channel> <title cf:type="text">Lift Off News</title> <link>http://liftoff.msfc.nasa.gov/</link> <description>Liftoff to Space Exploration.</description> <language>en-us</language> <pubDate>Tue, 10 Jun 2003 04:00:00 GMT</pubDate> <lastBuildDate>Tue, 10 Jun 2003 09:41:01 GMT</lastBuildDate> <docs>http://blogs.law.harvard.edu/tech/rss</docs> <generator>Weblog Editor 2.0</generator> <managingEditor>editor@example.com</managingEditor> <webMaster>webmaster@example.com</webMaster> <ttl>5</ttl> RSS Example Channel Metainformation

  14. <item> <title cf:type="text">Star City</title> <link>http://liftoff.msfc.nasa.gov/news/2003/news-starcity.asp</link> <description>How do Americans get ready to work with Russians aboard the International Space Station? They take a crash course in culture, language and protocol at Russia's Star City.</description> <pubDate>Tue, 03 Jun 2003 09:39:21 GMT</pubDate> <guid>http://liftoff.msfc.nasa.gov/2003/06/03.html#item573</guid> </item> <item> <title>Space Exploration</title> <link>http://liftoff.msfc.nasa.gov/</link> <description>Sky watchers in Europe, Asia, and parts of Alaska and Canada will experience a partial eclipse of the Sun on Saturday, May 31st.</description> <pubDate>Fri, 30 May 2003 11:06:42 GMT</pubDate> <guid>http://liftoff.msfc.nasa.gov/2003/05/30.html#item572</guid> </item> </channel> </rss> RSS Example Items

  15. Much of the material for this slide show came from • http://cyber.law.harvard.edu/rss/rss.html • Theirs is the definitive document for defining RSS 2.0 Reference

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