Venture out to our urban rooftop Observatory to view the night sky as our staff help you find planets and constellations. See the Moon, planets, and stars through our historic and now computer controlled Alvan Clark and Sons 8? refracting telescope. The Observatory is open weather permitting. Stargazing is free and open to the public, admission to the Science Center is not required. Please phone 410.545.2999 before your visit to check on viewing conditions and whether the observatory will be open that night.