The third stargazing session on Apr. 16, will include Physics Professor Eileen Korenic presenting “Gas Giant 5: The Solar System's Lost Planet” at 8 p.m. in Room 271, Centennial Science Hall. The discussion precedes the 8:30 p.m. telescope viewing on the third floor observation deck.All observatory viewings are dependent on a clear sky. Please call 715-425-3560 after 6 p.m. or visit Observatory schedule and click on "observatory" to verify that the sky is clear enough for viewing. The talk will go on as scheduled regardless of the weather.A physics department faculty member and/or student will staff each telescope and be available to answer questions at each open telescope session. Observers are encouraged to stay and look at as many elements as possible and feel free to request personal observing targets.Since the dome is unheated and the observation deck is outside open to the elements, visitors are advised to dress appropriately for the weather. The viewings and talks are suitable for all ages.