Otters, Beavers, and Muskrats, Oh My!, 1 to 2:30 p.m., Ipswich River Wildlife Sanctuary, 87 Perkins Row, Topsfield. Visit the numerous wetlands on the sanctuary and explore active and abandoned beaver lodges, scan the marshes for signs of muskrats and search for signs of otter activity. Construct and test a beaver dam and lodge. For families with children ages 6 to 16. Dress for weather. Meet in front of Visitor Center. Members: $7 adult, $6 child; nonmembers: $9 adult, $7 child. Registration required at www.massaudubon.org or 978-887-9264.
The GOES-R Weather Satellite, 7:30 to 9 p.m., Ipswich River Wildlife Sanctuary, 87 Perkins Row, Topsfield. The program will introduce the nation’s next generation of geosynchronous environmental satellites, as described by a member of the GOES-R Ground Segment team. GOES-R will provide atmospheric and surface measurements of the earth’s western hemisphere for weather forecasting, severe storm tracking, space weather monitoring, and meteorological research. The satellite, due for launch in 2015, will also provide improved monitoring of solar X-ray flux, solar flares, and coronal mass ejections, and improved geomagnetic storm forecasting. Afterward, gaze at the night sky through telescopes provided by local amateur astronomers. Visual highlights of the fall sky will include the moon, the Pleiades star cluster, and the Great Andromeda Galaxy, located some three million light years away. For families and children ages 10 to 18. Meet in the barn. Dress warmly for outdoor portion of the program. Members: $6 adult, $5 child; nonmembers: $7 adult, $6 child. Registration required at www.massaudubon.org or 978-887-9264.
Sunday, Nov. 10
Crane Estate Art Show and Sale, 10 a.m. to 4 p.m., Castle Hill on Crane Estate, 290 Argilla Road, Ipswich. View more than 150 pieces of art highlighting the beauty of North Shore landscapes and landmarks. This year’s theme is “Shifting Perspectives.” Special exhibition of North Shore student artwork and a community art project in the Casino complex. Art sale proceeds benefit The Trustees of Reservations and the artists. Small works will also be available for purchase in the small works gallery. Free admission. 978-356-4351, email@example.com.