Learn more about your galaxy and the night sky Friday, Aug. 30, with a special lecture by the astronomers, at 8:30 p.m., before stargazing through the astronomers’ telescopes. Families welcome. members free, non-members $5. Contact the arboretum to register or for more information at mail@thebrentonarboretum.org or 515.992.4211. Registration is also open at www.thebrentonarboretum.org. Walking tours led by Ames Area Astronomers are available for your group by request, Friday, Aug. 30, between 1 and 7:30 p.m. Families welcome. Tours are free with registration.