NGC 3147 is a spiral galaxy located in the constellation Draco. It is located at a distance of circa 130 million light years from Earth, which, given its apparent dimensions, means that NGC 3147 is about 140,000 light years across. It was discovered by William Herschel οn April 3, 1785. It is a Type II Seyfert galaxy.

Hubble Uncovers Black Hole Disk that Shouldn’t Exist

As if black holes weren’t mysterious enough, astronomers using NASA’s Hubble Space Telescope have found an unexpected thin disk of material furiously whirling around a supermassive black hole at the heart of the magnificent spiral galaxy NGC 3147, located 130 million light-years away.

The conundrum is that the disk shouldn’t be there, based on current astronomical theories. However, the unexpected presence of a disk so close to a black hole offers a unique opportunity to test Albert Einstein’s theories of relativity. General relativity describes gravity as the curvature of space and special relativity describes the relationship between time and space.

https://www.nasa.gov/feature/goddard/2019/hubble-uncovers-black-hole-that-shouldnt-exist

The shape and structure of this Spiral galaxy are plainly visible thanks to this perspective. Galaxy NGC 3147 galaxy is relatively close by, at a distance of roughly 130 million light-years, and can be found in the constellation of Draco (The Dragon).