The rings around the planet Uranus may have been spotted nearly 190 years prior to the accepted date for their discovery, according to a theory.
According to the orthodox view, the rings around Uranus were detected during an experiment in 1977.
Now, a scientist has re-evaluated a claim made in 1797 by astronomer Sir William Herschel that he saw rings around the seventh planet.
More: http://news.bbc.co.uk/2/hi/science/nature/6569849.stm