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Lunar eclipse
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=== Partial lunar eclipse === [[File:Eclipse_lunar_2019.gif|thumb|Latter phases of the partial [[July 2019 lunar eclipse|lunar eclipse on 17 July 2019]] taken from [[Gloucestershire]], [[United Kingdom]]]] When the Moon's near side penetrates partially into the Earth's umbra, it is known as a partial lunar eclipse,{{Sfn|Link|1969|p=2}} while a ''total lunar eclipse'' occurs when the entire Moon enters the Earth's umbra. During this event, one part of the Moon is in the Earth's umbra, while the other part is in the Earth's penumbra. The Moon's average [[orbital speed]] is about {{convert|2300|mph|km/s|abbr=on|sigfig=3|order=flip}}, or a little more than its diameter per hour, so totality may last up to nearly 107 minutes. Nevertheless, the total time between the first and last contacts of the Moon's limb with Earth's shadow is much longer and could last up to 236 minutes.<ref>{{Cite book |last=Karttunen |first=Hannu |url=https://books.google.com/books?id=DjeVdb0sLEAC&pg=PA139 |title=Fundamental Astronomy |date=2007 |publisher=Springer |isbn=9783540341444 |page=139}}</ref>
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