Backyard stargazers get a monthly guide to the northern hemisphere's skywatching events with "Tonight's Sky." September is all wet! Look for September constellations Aquarius, the Water Jar, and the Water Goat.
"Tonight's Sky" is produced by HubbleSite.org, online home of the Hubble Space Telescope. This is a recurring show, and you can find more episodes — and other astronomy videos — at HubbleSite.org.