Lemmon Stellerite Van Houten Type 277 radar Kathryn Harrison Cytisus scoparius Shavenbaby Symmetry Howard Zehr Type 271 radar Lava Medieval Warm Period Lost comet History of tuberculosis 57 mm anti-tank gun M1943 (ZiS-2) Deep sea mining Proto-Germanic language The Decay of the Angel Comet NEOWISE C/2012 E2 (SWAN) 276P/Vorobjov Terence Reese bibliography