vendredi 14 juillet 2017

New Horizons Unveils New Maps and videos of Pluto, Charon on Flyby Anniversary












NASA - New Horizons Mission logo.

July 14, 2017


Image above: Artist's impression of NASA's New Horizons spacecraft, en route to a January 2019 encounter with Kuiper Belt object 2014 MU69. Image Credits: NASA/JHUAPL/SwRI.

On July 14, 2015, NASA’s New Horizons spacecraft made its historic flight through the Pluto system – providing the first close-up images of Pluto and its moons and collecting other data that has transformed our understanding of these mysterious worlds on the solar system’s outer frontier.

Scientists are still analyzing and uncovering data that New Horizons recorded and sent home after the encounter. On the two-year anniversary of the flyby, the team is unveiling a set of  detailed, high-quality global maps of Pluto and its largest moon, Charon.

- New Horizons project science gallery for Pluto: http://pluto.jhuapl.edu/Multimedia/Science-Photos/search.php?form_keywords=42
- New Horizons project science gallery for Charon: http://pluto.jhuapl.edu/Multimedia/Science-Photos/search.php?form_keywords=121

“The complexity of the Pluto system — from its geology to its satellite system to its atmosphere— has been beyond our wildest imagination,” said Alan Stern, New Horizons principal investigator from the Southwest Research Institute in Boulder, Colorado. “Everywhere we turn are new mysteries. These new maps from the landmark exploration of Pluto by NASA’s New Horizons mission in 2015 will help unravel these mysteries and are for everyone to enjoy.”


Images above: Global mosaics of Pluto and Charon projected at 300 meters (985 feet) per pixel have been assembled from most of the highest resolution images obtained by the Long-Range Reconnaissance Imager (LORRI) and the Multispectral Visible Imaging Camera (MVIC) onboard New Horizons. Transparent, colorized stereo topography data generated for the encounter hemispheres of Pluto and Charon have been overlain on the mosaics. Terrain south of about 30°S on Pluto and Charon was in darkness leading up to and during the flyby, so is shown in black. “S” and “T” respectively indicate Sputnik Planitia and Tartarus Dorsa on Pluto, and “C” indicates Caleuche Chasma on Charon. All feature names on Pluto and Charon are informal. Images Credits: NASA/JHUAPL/SwRI/LPI.

NASA Video Soars over Pluto’s Majestic Mountains and Icy Plains

video
New Horizons Flyover of Pluto

Video Credits: NASA/JHUAPL/SwRI/Paul Schenk and John Blackwell, Lunar and Planetary Institute.

In July 2015, NASA’s New Horizons spacecraft sent home the first close-up pictures of Pluto and its moons – amazing imagery that inspired many to wonder what a flight over the distant worlds’ icy terrain might be like.

Wonder no more. Using actual New Horizons data and digital elevation models of Pluto and its largest moon Charon, mission scientists have created flyover movies that offer spectacular new perspectives of the many unusual features that were discovered and which have reshaped our views of the Pluto system – from a vantage point even closer than the spacecraft itself.

This dramatic Pluto flyover begins over the highlands to the southwest of the great expanse of nitrogen ice plain informally named Sputnik Planitia. The viewer first passes over the western margin of Sputnik, where it borders the dark, cratered terrain of Cthulhu Macula, with the blocky mountain ranges located within the plains seen on the right. The tour moves north past the rugged and fractured highlands of Voyager Terra and then turns southward over Pioneer Terra -- which exhibits deep and wide pits -- before concluding over the bladed terrain of Tartarus Dorsa in the far east of the encounter hemisphere.

video
New Horizons Flyover of Charon

Video Credits: NASA/JHUAPL/SwRI/Paul Schenk and John Blackwell, Lunar and Planetary Institute.

The equally exciting flight over Charon begins high over the hemisphere New Horizons saw on its closest approach, then descends over the deep, wide canyon of Serenity Chasma. The view moves north, passing over Dorothy Gale crater and the dark polar hood of Mordor Macula. The flight then turns south, covering the northern terrain of Oz Terra before ending over the relatively flat equatorial plains of Vulcan Planum and the “moated mountains” of Clarke Montes.

The topographic relief is exaggerated by a factor of two to three times in these movies to emphasize topography; the surface colors of Pluto and Charon also have been enhanced to bring out detail.

Digital mapping and rendering were performed by Paul Schenk and John Blackwell of the Lunar and Planetary Institute in Houston. All feature names in the Pluto system are informal.

New Horizons continues to speed along toward its next target – the Kuiper Belt object 2014 MU69.

New Horizons: http://www.nasa.gov/mission_pages/newhorizons/main/index.html

Images (mentioned), Videos (mentioned), Text, Credits: NASA/Bill Keeter.

Best regards, Orbiter.ch

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