Massive black holes in galaxies
Q. A new study has found that massive black holes at the heart of galaxies could swell to ___ billion times the mass of the Sun.- Published on 21 Dec 15a. 20
b. 30
c. 40
d. 50
ANSWER: 50
Black holes at the heart of galaxies have reached 50 billion times the mass of the sun before losing gas discs needed to sustain themselves. Scientists have explored supermassive black holes at the centre of galaxies which are regions of space where gas settles into a disc that is orbiting. Gas could lose energy and fall inwards, feeding the black hole. The black hole would grow 50 billion times the size o the sun until the star happened to fall straight in or another black hole merged with it.
