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Fresh crater on the Moon

Published by Matt on Tue Oct 20, 2009 8:34 am via: source
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Impacts at all scales dominate the lunar surface. This is a relatively small (440 m diameter) unnamed crater on the southwest rim of Metius B, which itself is a 14 km diameter crater on the floor of Metius, an 88 km diameter crater in the southeast highlands on the lunar nearside.

Fresh crater on the southwest rim of Metius B crater. Credit: NASA

Fresh crater on the southwest rim of Metius B crater. Credit: NASA

Some post-impact modifications to this crater are readily apparent. Although the crater itself is circular, you can see that the materials inside the crater slumped towards the downslope side of the crater following the impact. There are also numerous boulder trails emanating from around this very fresh crater, created when the rocks strewn outwards by this impact event landed on the slope and began rolling towards the bottom of Metius B.

Even though the Moon may not seem like a terribly dynamic environment, in actuality impacts still occur on a fairly regular basis. One of the critical goals of the LROC scientific investigation is to provide the necessary information to quantify the recent impact rate, providing a key data point for designers of future lunar habitats.

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