PIA18441: Stop Hitting Me

Stop Hitting Me


A portion of the crest of a small scarp, located north of the crater Stravinsky , is the subject of this image. A number of impact craters of all sizes and states of preservation are present. Some of the craters are primary impacts, formed by meteoroid whose orbits intersected that of Mercury. Many others are secondaries, resulting from pieces of ejecta launched by primary impacts that struck the surface and produced a crater themselves. This reminds us that airless Solar System bodies like Mercury, the Moon, and the satellites of the outer planets are continually hit by cosmic impacts. The presence of an atmosphere (i.e., at Venus, Earth, Mars, and Titan) provides some degree of protection, however.

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: March 04, 2014
Image Mission Elapsed Time (MET): 36251471
Image ID: 5871162
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 54.9°
Center Longitude: 284.0° E
Resolution: 7 meters/pixel
Scale: The edges of the scene are about 8 km (5 mi.) long
Incidence Angle: 62.5°
Emission Angle: 16.7°
Phase Angle: 45.7°
North is toward the top of the image.

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. 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 Saturn
Target Type Planet Satellite
Instrument Host MESSENGER
Host Type Orbiter
Instrument Mercury Dual Imaging System (MDIS)
Detector Narrow Angle Camera (NAC)
Extra Keywords Atmosphere, Crater, Grayscale, Impact, Map, Radio
Acquisition Date
Release Date 2014-05-21
Date in Caption 2014-03-04
Image Credit NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Source photojournal.jpl.nasa.gov/catalog/PIA18441
Identifier PIA18441