Planet Earth

NASA's Shiny New Eye on the Sky

Visual ScienceBy Rebecca HorneDec 3, 2010 6:43 PM


Sign up for our email newsletter for the latest science news

A technician examines 6 of the 18 mirrors for the James Webb Space Telescope at NASA's Marshall Space Flight Center in Huntsville, Alabama. Engineers there recently conducted cryogenic tests on the beryllium mirrors to study how well they maintain their shape at the ultralow temperatures the telescope will reach in space. This helps predict how well the telescope will image from infrared sources. All of the mirrors will undergo two series of tests lasting six weeks each in a helium-cooled vacuum chamber that hits temperatures as low as -415 degrees Fahrenheit. Tests are projected to wrap up in June, and the completed observatory--a larger successor to the Hubble Space Telescope--is scheduled for launch in 2013. Courtesy David Higginbotham/NASA

1 free article left
Want More? Get unlimited access for as low as $1.99/month

Already a subscriber?

Register or Log In

1 free articleSubscribe
Magazine Examples
Want more?

Keep reading for as low as $1.99!


Already a subscriber?

Register or Log In

More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Our List

Sign up for our weekly science updates.

To The Magazine

Save up to 70% off the cover price when you subscribe to Discover magazine.

Copyright © 2021 Kalmbach Media Co.