Black holes have occupied the imaginations of both scientists and science fiction writers ever since physicist John Wheeler coined the therm in 1969. Their unknowable interiors both excite and scare us, sending our curiosity into overdrive. What would travel near a black hole look like? Theoretical Physicist Dr. Ronald Mallett has an answer, and his matter-of-fact explanation sounds as if it was ripped straight from the pages of an Arthur C. Clarke novel. Listen to Dr. Mallett explain how the extreme gravitational pull generated by a black hole could serve as a natural time machine: