{"version":1,"type":"rich","provider_name":"Libsyn","provider_url":"https:\/\/www.libsyn.com","height":90,"width":600,"title":"Ep. 622: Rockier Moons &amp; Giant Asteroids","description":"Astronomy Cast Ep. 622: Rockier Moons &amp;amp; Giant Asteroids by Fraser Cain &amp;amp; Dr. Pamela Gay So a rock is a rock is a rock. Right? Across the solar system there are giant rocky asteroids and even \u201cgianter\u201d rocky moons. What is the difference between these two families of objects and where do they come from? ","author_name":"Astronomy Cast","author_url":"http:\/\/www.astronomycast.com","html":"<iframe title=\"Libsyn Player\" style=\"border: none\" src=\"\/\/html5-player.libsyn.com\/embed\/episode\/id\/21299213\/height\/90\/theme\/custom\/thumbnail\/yes\/direction\/forward\/render-playlist\/no\/custom-color\/88AA3C\/\" height=\"90\" width=\"600\" scrolling=\"no\"  allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen><\/iframe>","thumbnail_url":"https:\/\/assets.libsyn.com\/secure\/content\/116397908"}