Robert Wall is Executive Editor for Defense and Space. Based in London, he directs a team of military and space journalists across the U.S., Europe and Asia-Pacific. Wall initially worked at Aviation ...

Astronomers have spotted the blisteringly hot exhaust fumes of the earliest quasars, intensely bright cosmic titans powered by feeding supermassive black holes.

When I was a junior in high school, I took an English essay final on a subject that escapes me to this day. But what I remember most was the look on my teacher’s face when I asked her for a second ...