In August of 2007 astronomers located a gigantic hole in the universe. This empty space, stretching nearly a billion light-years across, is devoid of any matter. A radical and controversial theory proposes that it is a "Universe-in-mass Black hole"
Messier 81 (also known as Bode's Galaxy, or NGC is a spiral galaxy about 12 million light-years away in the constellation Ursa Major. Due to its proximity to Earth, large size and active galactic nucleus which harbours a super massive black hole
From Discovery News: "This image from the NASA/ESA Hubble Space Telescope reveals a galaxy cluster, known as MACS Each of the bright spots seen here is a galaxy, and each is home to many millions, or even billions, of stars.