mo4ch:>Dancing gargantuan black holes perform on cue | Mo4ch News

By Jonathan AmosBBC Science Correspondent 29 April 2020 Media playback is unsupported on your device Media captionArtwork of OJ 287: The smaller black hole punches through the accretion disc twice every 12 yearsAstronomers have been able to test key consequences of Einstein's theories by studying the way a couple of black holes move around each other.One of these objects is a true colossus - a hole weighing 18 billion times the mass of our Sun; the other not quite so big at "only" 150 million Sun masses.Scientists managed to predict their interactions very precisely.They did so by including their warping effects on space-time and by assuming the larger hole had a smooth "surface".The black hole pairing, known as OJ 287, exists about 3.5 billion light-years from Earth. Hubble delivers stunning 30th birthday pictureTwisting jet observed at supermassive black holeGravitational waves: So many new toys to unwrapScientists have long recognised a sudden brightening from t…