The Webb: NASA's Next Space Telescope  

Oleh:

Mraz, Stephen J.

Jenis: Article from Bulletin/Magazine - ilmiah internasional
Dalam koleksi: Machine Design (Soft Copy ada dalam http://search.proquest.com/) vol. 83 no. 12 (Jul. 2011), page 22-29.
Topik: Space Telescopes; Government Agencies; Infrared Radiation; Space Exploration

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Perpustakaan Pusat (Semanggi) Nomor Panggil: MM44 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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When the Hubble telescope retires in 2014 after almost 20 years of service, its successor, the James Webb Space Telescope, should be well on its way to sending NASA new images and data on objects farther away than ever before, both in terms of distance and time. The light Webb detects will have been traveling for up to 13 billion years, and at the speed of light, that adds up to a lot of miles. The far-off objects will also have been moving away from the Earth, according to the well-accepted Big-Bang Theory, so the light from them will be Doppler shifted to the IR spectrum. The telescope is scheduled for launch in 2014, a three-month journey and then a 10-year operational life. It consist of three sections: the telescope which gathers the light, the instrument module holding equipment that will examine the light, and the spacecraft which holds electrical, thermal, communications, and attitude and station keeping subsystems.

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