Tomorrow can watch "Neptune at Opposition".

<P> The new network on August 8th Shanghai Electric will occur tomorrow, "Neptune at Opposition," the Sky, after 10 days, due to recent changes from the Earth with its brighter, with the help of enthusiasts interested in astronomy telescope .glimpse of the mysterious blue planet Fengyun. .</ P> <P> since been found since 1846, Neptune still have not completed the revolution of the sun as it orbits around the sun 4.5 billion km radius of a long, one revolution takes about 165 years. .Neptune is too far away from the sun, where the sunlight is only about a hundred-watt light bulb. .Therefore, Neptune brightness very dark, usually difficult to observe. .</ P> <P> Sheshan Observatory science director, said Tang Haiming, 9 Neptune and the sun runs to 180 degrees longitude on the position, which is called the red astronomical day. .After 10 days, which from Earth recently, the brightness increased to 7.8 magnitude, is the best time for observation. .With 20 cm diameter telescope, astronomers can see its "shadow." .Red dates, the sun goes down, Neptune begins with the eastern horizon rises, until the next day before sunrise from the west, so can be observed throughout the night. .</ P> </ p>.