A. G. G. M. TielensAlexander Tielens is a professor of astronomy at both Leiden University and the University of Maryland. He has held appointments at the University of California, Berkeley, NASA Ames Research Center, the University of Groningen, and the Dutch Space Agncy; was the project scientist of the HIFI instrument on board of the Herschel Space Observatory; and was the NASA project scientist of the Stratospheric Observatory for Infrared Astronomy (SOFIA). He is a member of the Royal Netherlands Academy of Arts and Sciences and was awarded the Spinoza Prize in 2012. Read More Read Less