Backyard stargazers get a monthly guide to the northern hemisphere's skywatching events with "Tonight's Sky." In August, we have two full moons in one month, a great look at the Ring Nebula, and the Perseid meteor shower. "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.
http://www.youtube.com/watch?v=2aE0oUzbBKA&hl=en
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