<https://secure.gravatar.com/avatar/b996616e10bb5871e76500d053c5d0aa?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://cosmosmagazine.com/news/eyes-to-the-monster-slayer-perseid-meteors/>