News & Events Recent NewsUpcoming EventsAnnual EventsPhD DefensesSpecial Events Toggle Special Events Commencement 2022Past EventsApplied Physics/Physics Colloquium Toggle Applied Physics/Physics Colloquium Guidelines for HostsGuidelines for SpeakersColloquia Archives Announcements In the News Missing galaxy mass found February 18, 2014 Source: NatureGravitational lensing solves puzzle from the Big Bang’s echo.