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Historic Milestone: Pluto Mission Reaches Neptune's Orbit AUG 25, 2014 // BY IAN O'NEILL: Discovery News NASA New Horizons' view of distant Neptune and Triton. NASA/JOHNS HOPKINS UNIVERSITY APPLIED PHYSICS LABORATORY/SOUTHWEST RESEARCH INSTITUTE

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Pioneer 10: Jupiter Odyssey 1974 NASA; 1st Spacecraft to Jupiter & Beyond Neptune's Orbit https://www.youtube.com/watch?v=knrxKdZjd8s #space #Pioneer #Jupiter

from Mail Online

The New Horizons probe (artist's illustration top right) has passed the orbit of Neptune on its way to Pluto. Officials at Nasa in Washington DC heralded the milestone as a key moment in the mission.

Beyond its distance and estimated size, astronomers know little about the distant object V774104. Within a year, they hope to determine the characteristics of its orbit around the Sun (small yellow dot at center). The outermost pink circle denotes Neptune's orbit.

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from NASA

NASA’s New Horizons Spacecraft Crosses Neptune Orbit En Route to Historic Pluto Encounter

Two new 'worlds' discovered beyond Neptune WASHINGTON : Scientists have discovered two small 'worlds' far outside the orbit of Neptune in the deepest survey ever conducted to search out distant solar system objects. The new objects are located beyond the Kuiper Belt which is a region of small icy objects just beyond Neptune of which Pluto is a member. They have the third and fourth most-distant perihelia which is when an object has its closest approach distance to the Sun of any known…

Where Is Planet Nine? | IFLScience ...Planet Nine was first proposed to exist by astronomers Mike Brown and Konstantin Batygin last month. By modeling the motion of objects in the Kuiper Belt, an area of icy bodies outside Neptune's orbit, they suggested there was a Neptune-sized planet 10 times the mass of Earth orbiting the Sun at a distance of more than 200 AU (astronomical unit, 1 AU is the Earth-Sun distance)...