Sunday, July 23, 2017

Watch an astrophysicist explain how NASA's next space telescope will help us time-travel through the Universe

Watch an astrophysicist explain how NASA's next space telescope will help us time-travel through the Universe:

In just less than two years, NASA is slated to launch the most powerful space telescope that’s ever been built. It’s the James Webb Space Telescope, of JWST, and it’s being hailed as the successor to the Hubble Space Telescope that is currently in orbit around Earth. There’s a key difference, though, between the spacecraft. Whereas Hubble sees the Universe in mostly visible light, JWST will observe the cosmos in the infrared — a type of light that can’t be seen but is associated with heat emission. The JWST will capture this kind of light using a segmented mirror more than 20 feet across, allowing the observatory to look deeper into the Universe, and further back in time, than ever before.

At the end of last year, NASA celebrated the...
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