Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky.” In December, look for the double-star Eta Cassiopeiae with binoculars, and brave the cold to see the Geminid meteor shower in mid-month.
“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.
Visit Tonight’s Sky on HubbleSite.
http://hubblesite.org/explore_astronomy/tonights_sky