Difference between revisions of "July 1, 2011"
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=An Egg in the Nest= | =An Egg in the Nest= | ||
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<em>images from [http://lroc.sese.asu.edu/news/index.php?/archives/411-Tycho-Central-Peak-Spectacular!.html#extended LRO Featured Image] (NASA/GSFC/Arizona State University)</em><br /> | <em>images from [http://lroc.sese.asu.edu/news/index.php?/archives/411-Tycho-Central-Peak-Spectacular!.html#extended LRO Featured Image] (NASA/GSFC/Arizona State University)</em><br /> | ||
<br /> | <br /> | ||
| − | Oblique shots are always the most dramatic, and these two just reconfirm that truism. | + | Oblique shots are always the most dramatic, and these two just reconfirm that truism. |
| − | Normally the Lunar Reconnaissance Orbiter views the surface directly under the | + | Normally the Lunar Reconnaissance Orbiter views the surface directly under the spacecraft but for these images it was tilted 65° to better capture the oddity of a huge boulder |
| − | + | (~120 m wide) sitting in a hollow at the summit of Tycho's central peak. The boulder had | |
| − | (~120 m wide) sitting in a hollow at the summit of Tycho's central peak. The boulder had | + | been spotted on an earlier vertical image and was targeted for a dramatic reobservation. |
| − | been spotted on an earlier vertical image and was targeted for a dramatic reobservation. | + | The boulder sits on impact melt and it is possible that a smooth patch on top of the |
| − | The boulder sits on impact melt and it is possible that a smooth patch on top of the | + | boulder is also melt rock. The interrelation between central peak rebound, impact melt |
| − | boulder is also melt rock. The interrelation between central peak rebound, impact melt | + | ejection, and emplacement of a boulder should help constrain the sequence of events |
| − | ejection, and emplacement of a boulder should help constrain the sequence of events | + | that all happened at about the same time. This giant boulder is visible on earlier views, |
| − | that all happened at about the same time. This giant boulder is visible on earlier views, | + | especially from [http://www2.lpod.org/wiki/July_17,_2008 Kaguya], but no one appears to have commented on it. The brightness |
| − | especially from [http://lpod. | + | of this big boulder reminds me of an even [http://www2.lpod.org/wiki/July_7,_2009 larger piece] of ejecta (if that is what it is) to the |
| − | of this big boulder reminds me of an even [http://lpod. | + | east of Tycho. |
| − | east of Tycho. <br /> | + | <br /> |
<br /> | <br /> | ||
<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | ||
<br /> | <br /> | ||
<strong>Related Links</strong><br /> | <strong>Related Links</strong><br /> | ||
| − | Rükl plate [ | + | Rükl plate [https://the-moon.us/wiki/R%C3%BCkl_64 64]<br /> |
<br /> | <br /> | ||
<hr /> | <hr /> | ||
| − | + | <p><b>Yesterday's LPOD:</b> [[June 30, 2011|Good Job]] </p> | |
| − | ---- | + | <p><b>Tomorrow's LPOD:</b> [[July 2, 2011|Moons And Stars]] </p> |
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Latest revision as of 07:28, 28 October 2018
An Egg in the Nest
images from LRO Featured Image (NASA/GSFC/Arizona State University)
Oblique shots are always the most dramatic, and these two just reconfirm that truism.
Normally the Lunar Reconnaissance Orbiter views the surface directly under the spacecraft but for these images it was tilted 65° to better capture the oddity of a huge boulder
(~120 m wide) sitting in a hollow at the summit of Tycho's central peak. The boulder had
been spotted on an earlier vertical image and was targeted for a dramatic reobservation.
The boulder sits on impact melt and it is possible that a smooth patch on top of the
boulder is also melt rock. The interrelation between central peak rebound, impact melt
ejection, and emplacement of a boulder should help constrain the sequence of events
that all happened at about the same time. This giant boulder is visible on earlier views,
especially from Kaguya, but no one appears to have commented on it. The brightness
of this big boulder reminds me of an even larger piece of ejecta (if that is what it is) to the
east of Tycho.
Chuck Wood
Related Links
Rükl plate 64
Yesterday's LPOD: Good Job
Tomorrow's LPOD: Moons And Stars
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