Astrophysics :
Closest blackhole from earth discovered at 1000 LY.
The red star in the pic is the black hole. The two body revolving system approaching the third star, which gave scientists idea on the mass of the stars.
This one leads to hypothesis that there might be far more even nearer, un-detected black holes.
Interestingly till 2000 blackholes were only in theory and never detected. Things changed rapidly.
