For More Webcasts: http://www.nasm.si.edu/webcasts/archive.cfm?siref=YouTube&video=newworlds Marcy's research has focused on the detection of planets around stars other than Earth's sun. His team has discovered 145 extrasolar planets (as of November 2007), allowing study of the planets' masses and orbits. This lecture is part of the second annual John Bahcall Lecture Series, organized and made possible by the Space Telescope Science Institute in Baltimore and the Hubble Space Telescope Program at the Goddard Space Flight Center.
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