Add Yahoo as a preferred source to see more of our stories on Google. A new idea suggests hidden supermassive black hole pairs could reveal themselves through repeating, magnified flashes of starlight ...

Hackers and makers have built just about every kind of clock under the sun. Digital, analog, seven-segment, mechanical seven-segment, binary, ternary, hexadecimal… you name it. It’s been done. You ...

The detection of supermassive black holes orbiting each other could soon move from theory to observation, thanks to a ...

Gravitationally lensed starlight (orange) by a supermassive black hole binary. The Einstein ring is shown in blue. Image credit: Image created by Hanxi Wang. Researchers at Oxford University and the ...

Supermassive black holes rarely travel alone. Most large galaxies hide one at the center, and when galaxies collide, the two central black holes can end up bound together. Astronomers have seen plenty ...