Difference between revisions 1251679 and 1280270 on enwikiversity

< previous diff
next diff >
Crater astronomy
[[Image:Chain of impact craters on Ganymede.jpg|thumb|right|200px|The image shows a chain of craters on Ganymede. Credit: Galileo Project, Brown University, JPL, NASA.]]
{{complete}}
A '''crater''' may be any large, roughly circular, depression or hole in or beneath the rocky surface of a rocky object.
{{experimental}}
(contracted; show full)
[[Image:GRAIL's gravity map of the moon.jpg|thumb|right|200px|This image shows the variations in the lunar gravity field as measured by NASA's Gravity Recovery and Interior Laboratory (GRAIL) during the primary mapping mission from March to May 2012. Credit: NASA/JPL-Caltech/MIT/GSFC.]]
[[Image:Davy
  _crater.gifpng|right|thumb|200px|Lunar crater Davy is at top and Catena Davy below, as seen from Apollo 12. Credit: NASA.]]
Lunar craters "are pits or depressions in the surface of the Moon, produced by great impacts of gigantic meteoroids which mostly took place billions of years ago. They range in size from huge walled plains more than a hundred miles across to microscopic pits. The smallest craters which can be glimpsed through ordinary binoculars are about twenty miles across. These craters are most common in th(contracted; show full)[[Category:Physics and Astronomy]]
[[Category:Planetary Science]]
[[Category:Research]]
[[Category:Research projects]]
[[Category:Resources last modified in October 2014]]
[[Category:Technology]]

<!-- interlanguage links -->