Uranus rings discovered 180 years before the time may be pushed.

<P Align=center> </ P> <P align=center> Uranus and Saturn blue ring comparison chart (Source: U.S. space network) </ P> - Technology report [tech.] News: Beijing April 19 ., according to BBC reports, the traditional view that the ring of Uranus in 1977, an experiment was found. .Recently a new theory suggests that the generally accepted 180 years before the date of discovery, astronomers might have discovered rings around Uranus. .<P> Worked for Surrey Satellite Technology Limited, by Dr. Ivan Stewart on the 1797 release by the astronomer Sir William Herschel's discovery re-analyzed. .Herschel, Sir claimed seventh in the giant planets discovered around star ring, but before his discovery has been seen as a mistake but have not been recognized. .Held in the UK Royal Astronomical Society National Astronomy meeting, the new theory finally surfaced. .</ P> <P> Dr. Evans was also the first person to raise this new theory. .Before that, he had received a photo frame birthday book, and this page from the book published in 1815, an encyclopedia, an orrery painted above the picture. .(Orrery is a mechanical device used by astronomers, is to show the relative positions of planets and moons and movement.) Orrery on a page by the craftsman William Pearson (William Pearson) made, it shows Uranus .spin axis and rotating around it 6 smaller objects. .These objects can not be a satellite, the reason is very simple: two satellites of Uranus discovered in the 18th century, and its 6 stars satellite until 1985 - that is, NASA's "Voyager" spacecraft wear .over the planet before being discovered. .</ P> <P> in the study of this issue, Dr. Evans found that the Pearson orrery encyclopedia is observed in the Sir Herschel made based on the results. .He also is the seventh planet Uranus, discovered in 1781. .Herschel had used the form of notes detailing his observations on Uranus. .Dr. Evans notes in the analysis of those found following this section - "February 22, 1789: a suspected ring of stars." .In addition, the Herschel and even drew a small ring on the star map and make comments - "It's kind of tends to a red." .Keck Telescope has confirmed this. .</ P>.