A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

This is also unprecedented behavior for a black hole. If these weird episodes are the result of an orbiting white dwarf, a type of stellar remnant left behind when a star with around the mass of ...

A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could they be?

Credit: NASA / Aurore Simonnet (Sonoma State ... An artist's rendering of a white dwarf star speeding around the black hole 1ES 1927+654. A stream of particles trails the dense star.

Located at the center of a nearby galaxy, the black hole’s X-ray signals ... likely be a 0.1 solar-mass white dwarf — the leftover core of a low-mass star that has died and burped away its ...

White dwarfs are among the most compact objects in the cosmos, though not as dense as a black hole. Stars with up to eight ... observatories such as Nasa's Laser Interferometer Space Antenna ...

However, upcoming gravitational wave observatories like NASA's space-based ... That is because as the black hole drags the white dwarf inward, the dead star is shedding material.

Credit: NASA/Sonoma State University ... That is because as the black hole drags the white dwarf inward, the dead star is shedding material. That is kicking it backward, keeping the white dwarf ...