NASA NEW HORIZONS (2006-2019...)
Tenzing Montes (6, 200m / 6.2km - 20, 344ft / 3.9 mi)
PLUTO
About imageThis close-up image of a Tenzing Montes near Pluto’s equator captured by NASA’s New Horizons spacecraft on July 14, 2015 reveals a range of youthful mountains above the surface of the dwarf planet. This iconic image of the mountains, informally named Norgay Montes (Norgay Mountains) was captured about 1 ½ hours before New Horizons’ closest approach to Pluto, when the craft was 47,800 miles (77,000 kilometers) from the surface of the icy body. The star in the foreground is the Sun, Pluto being the farthest planet from the sun of our solar system.
The mountains
The Tenzing Montes (6, 200m / 6.2km - 20, 344ft / 3.9 mi) formerly Norgay Montes are icy mountains, near the Hillary Montes, bordering the southwest region of Sputnik Planitia in the south of Tombaugh Regio (or the part of Tombaugh Regio south of the equator). They are the highest mountain range on Pluto, and also the steepest, with a mean slope of 19.2 degrees.
The mountains, first viewed by the New Horizons spacecraft on 14 July 2015, and announced by NASA on 15 July 2015, are named after the Nepalese mountaineer Tenzing Norgay, who, along with Sir Edmund Hillary, made the first successful ascent of the highest peak on Earth, Mount Everest (29 May 1953). The mountains were informally called Norgay Montes by the New Horizons team, but that name was later changed from Norgay to Tenzing. On 7 September 2017, the name Tenzing Montes was officially approved together with the names of Tombaugh Regio and twelve other nearby surface features.
The Tenzing Montes rise up to 6.2 km (3.9 mi) high, about twice as high as the Hillary Montes. In comparison, Mount Everest rises 4.6 km (2.9 mi) base-to-peak though to an altitude of 8.8 km (5.5 mi) above sea level making it the highest peak on earth.
The space mission
New Horizons is an interplanetary space probe that was launched as a part of NASA's New Frontiers program. Engineered by the Johns Hopkins University Applied Physics Laboratory (APL) and the Southwest Research Institute (SwRI), with a team led by S. Alan Stern, the spacecraft was launched in 2006 with the primary mission to perform a flyby study of the Pluto system in 2015, and a secondary mission to fly by and study one or more other Kuiper belt objects (KBOs) in the decade to follow. It is the fifth artificial object to achieve the escape velocity needed to leave the Solar System.
Most of the post-Jupiter voyage was spent in hibernation mode to preserve on-board systems, except for brief annual checkouts. On December 6, 2014, New Horizons was brought back online for the Pluto encounter, and instrument check-out began. On January 15, 2015, the New Horizons spacecraft began its approach phase to Pluto.
On July 14, 2015, at 11:49 UTC, it flew 12,500 km (7,800 mi) above the surface of Pluto, making it the first spacecraft to explore the dwarf planet. On October 25, 2016, at 21:48 UTC, the last of the recorded data from the Pluto flyby was received from New Horizons. Having completed its flyby of Pluto, New Horizons has maneuvered for a flyby of Kuiper belt object (486958) 2014 MU69, expected to take place on January 1, 2019, when it will be 43.4 AU from the Sun.
In August 2018, NASA confirmed, based on results by Alice on the New Horizons spacecraft, of a "hydrogen wall" at the outer edges of the Solar System that was first detected in 1992 by the two Voyager spacecraft.