";s:4:"text";s:2567:" These observations probed the peak epoch of stellar production, about ten billion years ago, when galaxies were forming stars roughly ten times faster than their present counterparts. Far-infrared astronomy is the branch of astronomy and astrophysics that deals with objects visible in far-infrared radiation (extending from 30 μm towards submillimeter wavelengths around 450 μm). Delving deep into the history of our cosmos, the Herschel Space Observatory scrutinised hundreds of thousands of star-forming galaxies, peering back in time to when the Universe was less than one billion years old. In 1996, the Hubble Space Telescope released a picture which revolutionized astronomy. Herschel is named after Sir William Herschel, the discoverer of the infrared spectrum, double stars, and planet Uranus.. This picture, mankind’s deepest and most detailed optical view of the Universe, is known as the Hubble Deep Field (HDF) and is shown on the left below. It has a single mirror of 3.5 metres (11.5 ft) in diameter. There are thousands of galaxies in this picture, some of them the faintest and most distant objects in the Universe. Herschel An Infrared and Sub-millimetre Observatory The Herschel telescope is a scientific space mission developed by the European Space Agency (ESA) dedicated to observing the Universe in the infrared and sub-millimetre ranges (wavelengths between 60 et 670 µm), a window of the electromagnetic spectrum that is still largely unexplored. Herschel est un télescope spatial infrarouge développé par l'Agence spatiale européenne (ESA) opérationnel entre 2009 et 2013. A space-based telescope designed to study some of the coldest and darkest regions of the universe using infrared light, Herschel was responsible for numerous findings about dark matter, galaxies and other cosmic mysteries. Far infrared image of the Andromeda galaxy from the Herschel Space Observatory. Herschel Space Observatory Hayabusa Infrared Astronomical Satellite ABOUT THE MISSION.