Helmut Ullrich Astronomical Observatory (current) Hydrodesulfurization Ley Trans Decimal exponent Lenition Shiv (weapon) Jagmohan Princess Josephine of Baden Siege of Madrid (1521) Hopen (Svalbard) TCDD HT80000 IX Corps (North Korea) Hadeland dialect Batman: Arkham VR Aviation in Turkey Korean Federation for Environmental Movement Michal Linial Germans in Holyoke MOS-1 (satellite) P. Kesavadev Literary Award Lens (optics) Codex Brixianus Don Quijote (space probe) Heavy Cream Animal intelligence