At Johnson Space Center in Houston, Texas, a cavernous chamber is being modified for use in testing the Webb Telescope. Environmental testing is part of the myriad of tests Webb must endure to be deemed space-worthy.

“Behind the Webb” is a recurring video series from HubbleSite, home of the Hubble Space Telescope and the upcoming Webb Space Telescope. Join host Mary Estacion as she goes behind the scenes to watch the construction and testing of the parts that will make Webb the world’s most powerful infrared telescope.

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.

Visit Tonight’s Sky on HubbleSite.

http://hubblesite.org/explore_astronomy/tonights_sky

Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky.” Views of the Andromeda Galaxy, Jupiter and the Orionid Meteor Shower grace October’s skies.

“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