Here are four suggestions if you are looking for something to do this next week.

Astronomers gather
Dr. Woody Sullivan of the University of Washington will give a program, “William Herschel: The Greatest Observer,” during the meeting of the Tacoma Astronomical Society; 7:30-9 p.m. Tuesday; Room 175, Thompson Hall, University of Puget Sound; website.

Map, compass class
This hands-on class will teach you how to read a map and compass to pinpoint a location and then how to navigate to new locations; also learn how to identify your position and plan routes using only a topographic map; 6-8:30 p.m. Thursday; REI, 3825 S. Steele St., Tacoma; $30 for members and $50 for nonmembers; register at store or call 253-671-1938.

Saturday bike ride
Join the Saturday Spokie Cycling Club for a ride covering 50-60 miles; the group will average 17 mph but will hit 20-25 on flat roads; the route is decided that morning; 9 a.m. Nov. 5; Forza Coffee, 2700 Bridgeport Way, Suite G, University Place; for information, call Robert Deehan at 253-272-9682.

Nature Center work day
Help maintain the trails and grounds at The Tacoma Nature Center, volunteers might trim vegetation, plant native plantings, remove non-native species or maintain planting beds and gardens; 9 a.m.-noon Nov. 5; Tacoma Nature Center, 1919 S. Tyler St., Tacoma; 253-591-6439