Shall we dance? Two big black holes found together

Two colossal black holes appear to be orbiting one another in sort of a cosmic minuet at the center of a faraway galaxy formed when two separate galaxies collided, US astronomers said on Wednesday.

These two so-called supermassive black holes, which are celestial objects with enormous gravitational pull, are locked in orbit about 5 billion light years away from Earth, the scientists said. A light year is about 10 trillion km, or the distance light travels in a year.

Data from Apache Point Observatory in New Mexico provided the best evidence to date of two black holes orbiting each other, according to astronomer Todd Boroson of the National Optical Astronomy Observatory in Tucson, Arizona.