Difference between revisions 2117897 and 2117898 on enwikiversity

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Keynote lectures/Craters by radiation
[[Image:Chain of impact craters on Ganymede.jpg|thumb|right|250px|The image shows a chain of craters on Ganymede. Credit: Galileo Project, Brown University, JPL, NASA.]]
A '''crater''' may be any large, roughly circular, depression or hole in or beneath the rocky surface of a rocky object.

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"There is no estimate for how much methane is released into the atmosphere because we don't know how [to measure it]."<ref name=Romanovsky/>

"People in permafrost regions rely on frozen ground for their infrastructure. As the ground melts, the railway collapses, the roads fall apart, the buildings sink into the ground … It's happening already."<ref name=Henderson/>
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==Moon==
{{main|Wanderers/Moon|
Moon/Keynote lectureRocks/Rocky objects/Moon}}
[[Image:Carte Lune mers crateres.jpg|thumb|right|250px|The image is a map in French of the Moon showing the maria and the major craters. Credit: additions made to Lune22h27septembre2004.jpg created by Yves under GFDL by Eric Gaba ([[commons:User:Sting|Sting]] - fr:Sting).]]
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[[Category:Geography/Lectures]]
[[Category:Geology/Lectures]]
[[Category:Materials sciences/Lectures]]
[[Category:Planetary sciences/Lectures]]
[[Category:Radiation/Lectures]]
[[Category:Radiation astronomy/Lectures]]
[[Category:Resources last modified in November 2018]]