A supermassive black hole lurking at the heart of a relatively close galaxy is firing off a rapid-fire slew of ultrafast gas "bullets" into the surrounding galaxy. This is the conclusion of an ...

Primordial black hole "bullets," traveling at speeds greater than 7,000 times the speed of sound, may be punching through our solar system — and they could be causing a tiny wobble in Mars' motion.

Credit: Robert Lea (created with Canva)/NASA Primordial black hole "bullets," traveling at speeds greater than 7,000 times the speed of sound, may be punching through our solar system — and they ...