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November 8, 2007

THE FLOOD BEGINS

Filed under: , , , — chuckwood @ 12:01 am

20071107_kaguya_LPOD.jpg
image from Kaguya/Selene spacecraft of the Japan Aerospace Exploration Agency (JAXA)

Kaguya is a name we will all become very familiar with. Based on the first released images from the least sensitive scientific instrument on the Japanese lunar orbiter, we are in for a flood of wondrous new views of the Moon. The High Definition TV camera was apparently included on the spacecraft to provide PR views of the Moon and Earth, and its spectacular video and scenes from it don’t disappoint. This view from 100 km over the surface looks northward across the 109 km wide crater Repsold. This would be one of the most famous floor-fractured craters on the Moon if it were better placed for terrestrial observers. Repsold probably has more and larger rilles than any nearside crater. The large rille - like an exclamation mark - is about 330 m deep, according to measures made by Jim Mosher on the Lunar Orbiter image of Repsold. The rilles in Repsold probably are related to volcanism - notice the concentric crater at the north end of Repsold - but not to surface flows of lava. More likely, magma ponded under the crater, and under its satellite Repsold G at bottom left, and cracked their floors as it domed them upward. The land side of northwest Oceanus Procellarum has the richest concentration of floor-fractured craters on the Moon. Kaguya’s HDTV imaged these craters before reaching Repsold. We all should thank JAXA for releasing this video, and hope that they will continue to share with the world a river of videos and scientific data so we all can glory in their achievement.

Chuck Wood

Technical Details:
Oct 31, 2007.

Related Links:
Rükl plate I

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3 Comments »

  1. Interesting!
    Is there a concentric crater in Repsold?
    (see also: LO IV 189 h3).

    Danny Caes.

    Comment by caligula — November 8, 2007 @ 5:33 am

  2. Danny - yes, it is Repsold A.
    Chuck

    Comment by chuckwood — November 8, 2007 @ 7:13 am

  3. Well, here is an idea. I opened gmail (enter name: Lunainjaz, password: Lunainjaz2007) for all of us - to submite our studies of craters and other objects on photos. I started with regions that are on the 1st part of Kaguyas’s HDTV movie (mine poor photos and others from LPOD), but today I sketched a quick comic of second movie. Maybe some of you enjoye in it… Please, submite your studies of Moon to this gmail adress (http://mail.google.com/mail/?ui=1) - its here for all of us, when you’re not at home and in need of some diagonal view of our beloved Moon!
    Aleksander Božič aka SandiBandi from Slovenia

    Comment by SandiBandi — November 8, 2007 @ 12:22 pm

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