Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky.” In December, a lunar eclipse turns the Moon a festive holiday red. Perseus wanders the night. And binoculars reveal the Double Cluster, a lovely pair of star clusters. “Tonight’s Sky” is produced by HubbleSite, 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.
Visit Tonight’s Sky on HubbleSite.
http://hubblesite.org/explore_astronomy/tonights_sky/