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Tonight’s Sky: August 2012

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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.

Visit Tonight’s Sky on HubbleSite.

http://hubblesite.org/explore_astronomy/tonights_sky

Tonight’s Sky: July 2012

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Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky.” In July, the Delta Aquarid meteors pay a visit, and a trio of nebulae grace the sky.

“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

Behind the Webb: The Golden Touch (Episode 15)

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The Webb Telescope’s mirrors are coated in an extremely thin film of gold. This gold layer, only a few millionths of an inch thick, enables the mirrors to best reflect the infrared light the telescope seeks. The thinner the layer, the better off the telescope will be — every bit of weight counts when a telescope as big as Webb is being lifted into space by a rocket. Join us at Quantum Coating in New Jersey, where engineers are vaporizing gold to apply a thin, even layer to the telescope’s mirrors.

“Behind the Webb” is an ongoing series that follows the construction of the Webb Space Telescope, Hubble’s successor. Find more episodes at Hubblesite.org.

“Behind the Webb” archive
http://webbtelescope.org/webb_telescope/behind_the_webb/archive/