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Kuiper Belt - The Kuiper (pronounced Ki-Per) Belt is often called our Solar System's 'final frontier.'

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  • The Nine Planets Kuiper belt Inflrmation Page In 1950 Jan Oort noticed that 1. no comet has been observed with an orbit that indicates that it came from interstellar space, 2. there is a strong tendency for aphelia of long period comet orbits to lie at a distance of about 50,000 AU, and 3. there is no preferential direction from which comets come.
  • Kuiper Belt Starting in 1992, astronomers have become aware of a vast population of small bodies orbiting the sun beyond Neptune.
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