What label best describes this news article?
Titan: A Good Mystery (SPACE.com) SPACE.com - When was the last time you read a good mystery novel, or munched popcorn while watching a mystery flick at your local theater? Odds are, either of these entertainments set you back at least  #36;10 and lasted a few hours. For a lesser price, we're all participating in cracking a real mystery #x2014;what's beneath the clouds that cover Saturn's moon, Titan? 