A piano-sized explorer on a three-billion-mile journey to the solar system's edge
In short: Launched in 2006, NASA's New Horizons was designed to conquer distances never before attempted. Traveling at 31,000 mph, this 1,054-pound spacecraft aimed to transform our understanding of Pluto and the mysterious Kuiper Belt, marking a historic milestone in deep space exploration.
The New Horizons mission represents a landmark achievement in NASA's New Frontiers program, a series of competitively selected, principal investigator-led missions. To reach its primary target, the spacecraft had to overcome unprecedented challenges, traveling for more than nine years—a longer duration and a greater distance than any previous deep space mission. To achieve the necessary velocity for such a journey, NASA utilized a Lockheed Martin Atlas V rocket equipped with five strap-on solid rocket boosters.
The mission's primary objective was to conduct the first-ever close flyby of the dwarf planet Pluto and its moons. On July 14, 2015, the spacecraft successfully executed this encounter, capturing thousands of images and conducting a wide range of scientific observations. Beyond Pluto, New Horizons expanded the frontiers of solar system knowledge by becoming the first spacecraft to explore a Kuiper Belt Object up close, specifically Arrokoth (2014 MU69) in early 2019.
The spacecraft's design is built upon a lineage of previous missions, including CONTOUR and TIMED, both developed by the Johns Hopkins University Applied Physics Laboratory. It carries a sophisticated suite of instruments, such as the Long-Range Reconnaissance Imager (LORRI) and the Student Dust Counter (SDC), to study the relics of the solar system's formation. By October 1, 2024, the spacecraft had reached a distance 60 times that of Earth from the Sun, placing it twice as far out as Pluto was during its 2015 flyby.
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Sources
- Summary by Intellect · source: NASA's New Horizons Spacecraft: Getting to Pluto
- Also: New Horizons
- Also: NASA Met Unprecedented Challenges Sending Spacecraft to Pluto - NASA
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