The most popular hypothesisassumed that the apparent rings formed when Messier 32(M32), a compact dwarf galaxy with a supermassive black hole at its centre, crashed into Andromeda hundreds of millions of years ago.
It is said that the catalog which Messier published himself only included up to M103. But later on, his pupil Pierre Mechain(1744- 1804) discovered the rest of the objects and added them to the catalog as"nebulae.
All I saw was a small ring shape alone in the wide field of view and thought,"Even thoughit is called a Messier Object, this is all there is?"But when I saw from the image of M57 taken by the newly completed Subaru Telescope that M57 conceals a complex, minute structure, I was deeply moved.
You may now download optional data files to enhance KStars, such as Messier object images, or a more complete NGC/ IC catalog. Press the Download Extra Data button to proceed. You can also use this tool later, by selecting Download data from the File menu.
However, by imaging the cloud of hot, brightly glowing gas that surrounds it, the EHT team of more than 200 scientists was able to capture the silhouette of the supermassive black hole that lies at the center of Messier 87(M87), a galaxy nearly 55 million light-years from Earth.
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