I don't know where they got "exoplanets" from. I Googled a bit and the best [0] I could find indicates some connection to radar tech used on missions like Cassi

I don't know where they got "exoplanets" from. I Googled a bit and the best [0] I could find indicates some connection to radar tech used on missions like Cassini's. 0. http://www.jpl.nasa.gov/news/news.php?release=2013-290 http://www.jpl.nasa.gov/news/news.php?release=2013-290