Astronomy-- probing the first stars & galaxies.
(eVideo)

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[San Francisco, California, USA] : Kanopy Streaming, 2014.
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1 online resource (1 video file, approximately 13 min.) : digital, .flv file, sound
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0b1cbed2-9125-7280-8db0-698f89e1f622-eng
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Grouped Work ID0b1cbed2-9125-7280-8db0-698f89e1f622-eng
Full titleastronomy probing the first stars and galaxies
Authorkanopy
Grouping Categorymovie
Last Update2022-06-16 00:36:02AM
Last Indexed2024-04-27 02:37:26AM

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Image Sourcesideload
First LoadedMay 7, 2022
Last UsedFeb 19, 2024

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First DetectedMay 30, 2021 12:36:04 PM
Last File Modification TimeFeb 03, 2022 11:51:28 AM

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500 |a Title from title frames.
518 |a Originally produced by TMW Media in 2005.
520 |a Visible light, which can be seen with our eyes, comprises a small sliver of the electromagnetic spectrum. The rest of the spectrum, from short wavelength gamma rays to long-wavelength radio waves, requires special instruments to detect. ALMA uses and array of radio telescopes to detect and study radio waves from space. Radio telescopes are typically large parabolic dish antennas used singly or in an array. Radio observatories are preferentially located far from major centers of population to avoid electromagnetic interference (EMI) from radio, TV, radar, and other EMI emitting devices. This is similar to the locating of optical telescopes to avoid light pollution, with the difference being that radio observatories are often placed in valleys to further shield them from EMI as opposed to clear air mountain tops for optical observatories. ALMA is an advanced tool for studying very old stars and galaxies. These objects now are seen at great cosmic distances, with most of their light stretched out to millimeter and sub-millimeter wavelengths by the expansion of the universe. ALMA provides the unprecedented ability to study the processes of star and planet formation. Unimpeded by the dust that obscures visible-light observations, ALMA will be able to reveal the details of young, still-forming stars, and is expected to show young planets still in the process of developing. In addition, ALMA will allow scientists to learn in detail about the complex chemistry of the giant clouds of gas and dust that spawn stars and planetary systems.
538 |a Mode of access: World Wide Web.
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