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Post Info TOPIC: Herschel Space Observatory
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Herschel closes its eyes on the Universe

ESA's Herschel space observatory has exhausted its supply of liquid helium coolant, ending more than three years of pioneering observations of the cool Universe.
The event was not unexpected: the mission began with over 2300 litres of liquid helium, which has been slowly evaporating since the final top-up the day before Herschels launch on 14 May 2009.
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Hot from cold - unveiling the universe



Over 1.5 million kilometres from earth the Herschel Space Telescope has been observing the universe for the last two years, looking at radiation emitted by the coldest bodies in the cosmos, which can only be detected with infrared.



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One Year Later: Herschel Telescope Scans Skies


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Herschel Results



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Herschel - One year after launch



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Herschel: Investigating how stars and planets form


Herschel, ESA's cutting-edge space observatory, will carry the largest, most powerful infrared telescope ever flown in space. A pioneering mission to study the origin and evolution of stars and galaxies, it will help understand how the Universe came to be what it is today.

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Exploring the Universe with Herschel and Planck


Herschel will investigate how stars and galaxies formed and how they continue to form in our own and other galaxies, meanwhile Planck will look back at the dawn of time, helping astronomers to study the birth and evolution of the Universe.

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ESA's test centre is buzzing with activity and anticipation as it welcomes its latest guest. The gigantic telescope of ESAs space-based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft in the next few weeks.
 Herschels telescope, which will carry the largest mirror ever flown in space, has just been delivered to ESAs European Space Research and Technology Centre, ESTEC. Here, engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in late 2008.

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The Heart of Herschel is complete
With a revolutionary 3.5 metre primary mirror, Herschel will be the largest space telescope ever launched. Its helium-cooled sensitive science instruments will have the potential to penetrate the unknown areas of the cold, early universe. ESA's far-infrared space observatory has today reached a milestone. The spacecraft's two major parts, service module and science payload have been mated at EADS Astrium facilities in Friedrichshafen, Germany. After further assembly work, the satellite will be subjected to environmental and system tests in view of an Ariane 5 launch next year.

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