I have 2 Q 1 = What is better - RSS or Atom? Google's choice is Atom, while Yahoo's is RSS. Dave Winer, one of the main RSS developers, suggests combining these two formats. 2 = its ok to have RSS without Atom Script. i mean that my RSS feed Still be valid ? here is my rss feed http://www.astrohope.com/star_detail.xml check it and tell me is it valid ?
i did a quick validation of your rss feed at http://beta.feedvalidator.org/ and it says its valid - so be happy