planets UC Grad Discovers Planet 320 Light Years Away By Mark Heyne • May 2, 2017 European Southern Observatory/L. Calçada/M. Kornmesser Listen Listening... / 26:32 At a distance of 320 light years from Earth there is a planet in constant daylight, with three suns and seasons longer than a human lifetime. We don’t just know it’s there, we have visual proof. Astronomer Michael Sitko from UC By Dean Regas • Jun 7, 2013 Listen Listening... / 10:22 In this month’s Looking Up, Dean Regas from the Cincinnati Observatory welcomes in Michael Sitko, a professor of physics at the University of Cincinnati who teaches astronomy and has a special interest in the process of planet formation.