An M270 firing an ATACMS. Ukraine’s new, American-made M39 rockets can scrape entire helicopter regiments off their airfields and perforate supply convoys and air-defense batteries. But there ...

The U.S. Army’s M39 Army Tactical Missile System is a two-ton, 13-foot ballistic missile with a solid rocket motor and a warhead containing 950 grenade-size submunitions. Fired by a tracked or ...

According to Michigan State Police, it happened just before 6 p.m., on M39 near the I-96 ramp, as police got calls about a possible shooting in the area of westbound I-96 near Evergreen.

My choice for a small-telescope target is open cluster M39 in Cygnus, also known as NGC 7092. You’ll find it 2.8° north of magnitude 4 Rho (ρ) Cygni. M39 shines at magnitude 4.6. Charles ...