A fast-thinking commercial pilot executed an “aggressive” evasive maneuver to avoid a midair collision with a US Air Force B-52 bomber over North Dakota. The Embraer E175 jet — en route from ...

Vera C. Rubin, the astronomer for whom the new observatory is named, circa 1985. In the 1970s, she and a colleague uncovered strong evidence for the existence of dark matter. Mark Godfrey/AIP ...