Almost every civilization that has kept a written history has recorded the sightings of strange objects and lights in the skies. These objects have been described as glowing wheels, colored balls of light, and disk shaped objects, these are referred to as unidentified flying objects. The effects of extra terrestrial sightings can have an adverse effect on people if influenced the wrong way. No solid proof has shown that UFO's are real. People around the world say that they have seen UFO's, many of these sightings have logical reasons behind them, and some of these cannot be explained.
             Sightings of UFO's are reported all around the world. In China, poor farmers in Beijing's barren hills saw an object covered in colored lights. In addition to the farmers, 12 other Chinese cities reported possible UFO sightings, around the same timing as Beijing. In the Northern Territories, people report that they have seen weird flashings of colors, they say that these lightings could have been from the spaceships. But the Northern Territory is a little bit different from the rest of locations of the sightings because of the Northern lights and other atmospheric irregularities.
             Many of the sightings are false sightings. Most of the sightings turned out to be celestial objects, such as stars or bright planets like Venus, or atmospheric events such as auroras or meteors falling through the atmosphere. Or they turned out to be objects such as weather balloons, satellites, aircraft lights, or formations of birds. Often the sightings were accompanied by unusual weather conditions. Radar often picks up ionized gas, rain, or thermal discontinuities, which may affect the people's eyes.
             About 5 percent of the reports cannot be explained. Many people just simply see flashes of different colors. Other people actually say they see spaceships. One of the most intriguing cases, are the Crop Circles. Crop Circles are unexplained designs
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