Exploring the solar system's frigid edge
The faint, distant objects of the Kuiper Belt hide secrets as to how the solar system formed.
May 24, 2010
The New Horizons spacecraft is making a beeline toward distant Pluto. In 2010, it passes the halfway point to its prime destination — twice, in fact. On February 25, it reached the midpoint in distance traveled; on October 16, it will have been in space for half the time it will take to get to Pluto.
New Horizons' path to Pluto.
Photo by Astronomy: Kellie Jaeger
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