A starship driven by a captive black hole sounds like pure science fiction, yet the underlying physics is brutally literal. A tiny, artificial singularity would convert mass into energy with an ...

In the quest for advanced civilizations, the universe is not often very forthcoming with its answers. But the recent suggestion by Harvard astrophysicist Avi Loeb has set astrophysics and SETI ...

Dark star -- A map of forever -- One hundred billion ways to the bottom -- The feeding habits of nonillion-pound gorillas -- bubbles -- A distant siren -- Origins : part I -- Origins : part II -- ...

The catastrophic collision of a black hole and a neutron star sent ripples across the universe. New analysis of those ripples could upend a major theory about how these extreme pairs form.