Video Link: https://www.youtube.com/watch?v=aMpB6-ycgbY

ESOcast 45: Reaching Out mdash; Special 50th anniversary episode #5 [HD]
Leading up to ESO #39;s 50th anniversary in October 2012, we are releasing eight special ESOcasts, each a chapter from the movie Europe to the Stars mdash; ESO #39;s First 50 Years of Exploring the Southern Sky. ESOcast 44 mdash; entitled Changing Views mdash; is the fourth special episode of this series. Since its birth, fifty years ago, ESO has helped to improve our knowledge of the Universe by means of successive generations of powerful optical ground-based telescopes. But there are other ways to collect the light from distant objects. In this episode, we discover how ESO has helped astronomers to explore the Universe at longer wavelengths, such as the infrared and radio regimes. The human eye is only sensitive to a small part of the electromagnetic spectrum. We are not able to see light with wavelengths longer than red, or shorter than violet. But by observing the sky at longer wavelengths, astronomers are able to detect objects too cool to emit visible light and those hidden by dust. This has revolutionised the study of the dark clouds of gas and dust where stars and planets are born. ESO astronomers have been exploring the Universe at infrared wavelengths for the past thirty years, from the first small and inefficient detectors to the powerful infrared telescopes of today, such as the Visible and Infrared Survey Telescope for Astronomy (VISTA), located at ESO #39;s Paranal Observatory in northern Chile. Also in northern Chile, on the Chajnantor Plateau, 5000 metres above sea level, the ...From:TheMarsUndergroundViews:13 1ratingsTime:09:02More inScience Technology

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ESOcast 45: Reaching Out — Special 50th anniversary episode #5 [HD] - Video