Messier 91 galaxy, missing since 1781, was found by amateur astronomer in 1969
Barred spiral galaxy Messier 91 (M91) lies in the constellation of constellation of Coma Berenices. The galaxy’s bar stands out quite noticeably. The galaxy represents the faintest object in Charles Messier’s catalog, and he discovered it in 1781. Notably, a rare error by Messier caused the galaxy to go “missing” for centuries, until amateur astronomer […]