Editing Mare Undarum

{{Infobox Lunar mare
 | name        = Mare Undarum
 | image       = Mare Undarum (LRO).png
 | caption     = [[Lunar Reconnaissance Orbiter|LRO]] mosaic of Mare Undarum
 | eponym      = Sea of Waves
 | coordinates = {{coord|7.49|N|68.66|E|globe:moon_type:landmark|display=inline,title}}<ref name=USGS/>
 | diameter    = {{val|244.84|u=km}}<ref name=USGS/>
}}

'''Mare Undarum''' {{IPAc-en|V|n|'|d|ɛər|@|m}} (Latin ''undārum'', the "sea of waves") is a shallow, irregular [[lunar mare]] located just north of [[Mare Spumans]] on the lunar near side, between the crater [[Firmicus (crater)|Firmicus]] and the eastern limb. It lies within a trough between the third and fourth raised rings formed by the impact that created the [[Mare Crisium]].<ref name=DeHon1975/> The selenographic [[coordinate]]s of this mare are 7.5° N, 68.7° E. It has a maximum diameter of 245 km.<ref name=USGS/>

There are five known [[lunar dome]]s within the mare.<ref name=Lena_et_al_2008/> The surrounding basin material is of the [[Nectarian]] [[epoch (geology)|epoch]], with the mare [[basalt]] being of the [[Upper Imbrian]] epoch. The crater [[Dubyago (crater)|Dubyago]] can be seen on the southern edge of the mare. On the northeastern edge of the mare is the crater Condorcet P.

When [[Johann Heinrich von Mädler|Mädler]] observed this area in the 1830s, he noted variations in the curved dark streaks that form this mare, leading him to speculate that the changes were caused by vegetation.

== Fictional References ==
Mare Undarum was the location of the second catapult in [[Robert A. Heinlein]]'s novel [[The Moon Is a Harsh Mistress]].  The exact location of the catapult was kept secret and was "A matter of Lunar national security."

==Gallery==
<gallery widths="180px">
Mundarum.jpg|Mare Undarum from the NASA Lunar Atlas
Mare_Undarum_AS17-M-1626.jpg|Oblique view of Mare Undarum (foreground) and [[Mare Spumans]] (upper right), facing south, from [[Apollo 17]]
LAC 62.jpg|Chart of Mare Undarum and surroundings 
</gallery>

==See also==
*[[Volcanism on the Moon]]

==References==
{{Reflist|refs=

<ref name=USGS>{{gpn|3693}}</ref>

<ref name=DeHon1975>{{cite conference
 | first=R. A. | last=DeHon
 | title=Mare Spumans and Mare Undarum: mare thickness and basin floor
 | conference=Lunar Science Conference, 6th, Houston, Tex., March 17-21, 1975, Proceedings
 | publication-place=New York | publisher=Pergamon Press, Inc.
 | date=1975 | pages=2553–2561 | volume=3
 | bibcode=1975LPSC....6.2553D }}</ref>

<ref name=Lena_et_al_2008>{{cite journal
 | title=Lunar domes in Mare Undarum: Spectral and morphometric properties, eruption conditions, and mode of emplacement
 | display-authors=1 | last1=Lena | first1=Raffaello
 | last2=Wöhler | first2=Christian | last3=Bregante | first3=Maria Teresa
 | last4=Lazzarotti | first4=Paolo | last5=Lammel | first5=Stefan
 | journal=Planetary and Space Science
 | volume=56 | issue=3–4 | pages=553–569 | date=March 2008
 | doi=10.1016/j.pss.2007.11.010 | bibcode=2008P&SS...56..553L }}</ref>

}}

==External links==
*[https://web.archive.org/web/20030722015149/http://lunar.arc.nasa.gov/science/atlas/mare/mare.htm NASA lunar Atlas]
__NOTOC__
{{Lunar maria}}

[[Category:Maria on the Moon|Undarum]]
[[Category:Nectarian|Undarum]]
[[Category:Imbrian|Undarum]]