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OUTER PLANETS
Zooming in on Pluto's Pattern of Pits
by Staff Writers
Washington DC (SPX) Dec 11, 2015


On July 14 the telescopic camera on NASA's New Horizons spacecraft took the highest resolution images ever obtained of the intricate pattern of "pits" across a section of Pluto's prominent heart-shaped region, informally named Tombaugh Regio. The image is part of a sequence taken by New Horizons' Long Range Reconnaissance Imager (LORRI) as the spacecraft passed within 9,550 miles (15,400 kilometers) of Pluto's surface, just 13 minutes before the time of closest approach. Image courtesy NASA/JHUAPL/SwRI. For a larger version of this image please go here.

On July 14 the telescopic camera on NASA's New Horizons spacecraft took the highest resolution images ever obtained of the intricate pattern of "pits" across a section of Pluto's prominent heart-shaped region, informally named Tombaugh Regio.

Mission scientists believe these mysterious indentations may form through a combination of ice fracturing and evaporation.

The scarcity of overlying impact craters in this area also leads scientists to conclude that these pits - typically hundreds of yards across and tens of yards deep - formed relatively recently.

Their alignment provides clues about the ice flow and the exchange of nitrogen and other volatile materials between the surface and the atmosphere.

The image is part of a sequence taken by New Horizons' Long Range Reconnaissance Imager (LORRI) as the spacecraft passed within 9,550 miles (15,400 kilometers) of Pluto's surface, just 13 minutes before the time of closest approach.

The small box on the global view shows the section of the region imaged in the southeast corner of the giant ice sheet informally named Sputnik Planum.

The magnified view is 50-by-50 miles (80-by-80 kilometers) across. The large ring-like structure near the bottom right of the magnified view - and the smaller one near the bottom left - may be remnant craters.

The upper-left quadrant of the image shows the border between the relatively smooth Sputnik Planum ice sheet and the pitted area, with a series of hills forming slightly inside this unusual "shoreline."


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Previous Report
OUTER PLANETS
New Visualization of Space Environment at Pluto
Washington DC (SPX) Dec 09, 2015
This video shows a simulation of the space environment all the way out to Pluto in the months surrounding New Horizons' July 2015 flyby. At the time, scientists at NASA's Goddard Space Flight Center in Greenbelt, Maryland, worked with the New Horizons team to test how well their models-and other models contributed by scientists around the world-predicted the space environment at Pluto. ... read more


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