Astronomers may have discovered a ‘dark’ free-floating black hole

image: Hubble Space Telescope image of a distant star that was brightened and distorted by an invisible but very compact and massive object between the star and Earth. The compact object — estimated by UC Berkeley astronomers to be 1.6 to 4.4 times the mass of our sun — could be a free-floating black hole, … Read more

Stellar “ghost” discovered: Astronomers may have detected a “dark” free-floating black hole

Artist’s illustration of a black hole. Gravity microlensing emerges[{” attribute=””>black hole candidate, one of 200 million in the galaxy. When massive stars come to the end of their lives and explode in a supernova, they leave behind a black hole. It is estimated that about one in a thousand stars is massive enough to give … Read more