PIA19246: The Young Ones

The Young Ones


This high-resolution view shows hollows on the southwestern peak ring of the Scarlatti basin . The hollows are the irregularly shaped, flat-floored depressions. The image is striking because it shows that there are abundant small impact craters on the surface surrounding the hollows. But there are few if any within the hollows themselves. Since impacts occur randomly over Mercury's surface and accumulate with time, the lack of craters on the hollows indicates that they must be very young relative to the rest of Mercury's surface.

This image was presented at a press conference at the Lunar and Planetary Science Conference, March 16, 2015.

This image was acquired as a high-resolution targeted observation. Targeted observations are images of a small area on Mercury's surface at resolutions much higher than the 200-meter/pixel morphology base map. It is not possible to cover all of Mercury's surface at this high resolution, but typically several areas of high scientific interest are imaged in this mode each week.

Date acquired: August 31, 2014
Image Mission Elapsed Time (MET): 51805374
Image ID: 6975018
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 39.90°
Center Longitude: 258.2° E
Resolution: 3.8 meters/pixel
Scale: The image is about 3.8 by 4.5 km (2.3 by 2.8 mi.).
Incidence Angle: 60.3°
Emission Angle: 29.6°
Phase Angle: 89.9°

Background Info:

The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation are unraveling the history and evolution of the Solar System's innermost planet. During the first two years of orbital operations, MESSENGER acquired over 150,000 images and extensive other data sets. MESSENGER is capable of continuing orbital operations until early 2015.

For information regarding the use of images, see the MESSENGER image use policy .

Cataloging Keywords:

Name Value Additional Values
Target Mercury
System Mercury
Target Type Planet
Instrument Host MESSENGER
Host Type Orbiter
Instrument Mercury Dual Imaging System (MDIS)
Extra Keywords Crater, Grayscale, Map, Radio
Acquisition Date
Release Date 2015-03-16
Date in Caption 2014-08-31 2015-03-16
Image Credit NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Source photojournal.jpl.nasa.gov/catalog/PIA19246
Identifier PIA19246