Summary: <p><a rel="nofollow" class="guestlink">Sara Seager</a>, <a rel="nofollow" target="_blank" href="http://seagerexoplanets.mit.edu/">Planetary Science and Physics Professor</a>?at the Massachusetts Institute of Technology, and <a rel="nofollow" class="guestlink">Seth Shostak</a>, Senior Astronomer and Director of the <a rel="nofollow" target="_blank" href="http://www.seti.org/centerforseti">Center for SETI Research</a>, tell us all about how astronomers look for extraterrestrial life and other planets like earth in the universe.?</p>
