Thierry Legault Thierry Legault Thierry Legault (born 1962, chinese name :特厄力‧立夠) is a French amateur astronomer, specializing in astrophotography. An engineer by trade, he started astrophotography in 1993 and resorted to CCD cameras to photograph the deep sky. He then joined the "Association des utilisateurs de détecteurs electroniques (l'AUDE)", which aims to develop astronomical observation based on electronic detectors. In 1994, along with Christian Buil, he participated in a mission at the Pic du Midi Observatory on the collision of comet Shoemaker-Levy 9 with Jupiter and launched himself into planetary photography. He is the first amateur to have shown on his photographs
Herschel Space Observatory had been delivered as a result of the collision of Comet Shoemaker–Levy 9 in 1994. On 22 January 2014, ESA scientists reported the detection, for the first definitive time, of water vapor on the dwarf planet, Ceres, largest object in the asteroid belt. The detection was made by using the far-infrared abilities of the "Herschel Space Observatory". The finding is unexpected because comets, not asteroids, are typically considered to "sprout jets and plumes". According to one of the scientists, "The lines are becoming more and more blurred between comets and asteroids." On 29 April 2013, ESA announced that "Herschel" supply