NASAのインスタグラム(nasagoddard) - 9月18日 05時21分


🗣️ in the hole! ....well, almost. ⛳ .

Had this boulder on the Moon rolled just 250 feet more, it might have plopped neatly into a crater.

This image shows a small portion of the rim of Antoniadi crater on the far side of the Moon. Sometimes, material moves down the slope rapidly in discrete chunks. Running from the outcrops to the rim of the partially buried crater is a track etched by a rolling boulder bigger than a bus. Perhaps a moonquake shook it loose. The boulder bounced and rolled toward the partially buried crater, plowing a path that is still visible through the loose material of the slope. When it reached the rim of the partially erased crater, its path curved and it slowed to a stop.

This image was captured by NASA's Lunar Reconnaissance Orbiter Camera, or LROC, a system of three cameras mounted on the Lunar Reconnaissance Orbiter (LRO) that capture high resolution images of the lunar surface.

Read more: http://lroc.sese.asu.edu/posts/1110

Credit: NASA/GSFC/Arizona State University
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