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Category: Science
Date: 06/09/15 01:30 PM

9 Responses to When the Earth Had Two Moons [Pic+]

  1. Profile photo of ElectricEye
    ElectricEye Male 50-59
    2729 posts
    June 8, 2014 at 3:03 pm
    Link: When the Earth Had Two Moons - A new model, ``The Big Splat`` explains the strange asymmetry of the moon.
  2. Profile photo of Zed68
    Zed68 Male 40-49
    1015 posts
    June 9, 2014 at 1:39 pm
    Interesting !!!!
  3. Profile photo of OldOllie
    OldOllie Male 60-69
    15841 posts
    June 9, 2014 at 2:58 pm
    Quite an elaborate explanation for something that has been well understood for quite some time. The reason that the same side of the moon always faces earth is that the moon is tidally locked. It`s a common configuration because it`s center of mass is slightly offset from it`s geometric center. Its heavy side faces the earth for the same reason that a ball that`s heavier on one side will tend to come to rest on a table with the heaviest side at the bottom.

    Also, the reason for the difference in the number of craters is that the earth acts like a gravitational lens that bends the paths of asteroids, comets, and meteors so that the near side actually received MORE large impacts than the far side. These larger impacts in the late stages of lunar formation broke through the crust allowing lava to flow out onto the surface and form the maria that we see from earth.
  4. Profile photo of ferdyfred
    ferdyfred Male 40-49
    13631 posts
    June 9, 2014 at 3:42 pm
    Um, like he says !
  5. Profile photo of drawman61
    drawman61 Male 50-59
    7751 posts
    June 9, 2014 at 4:04 pm
    The reason the `moonrock` Nasa has tested is so like Earth rock is pretty obvious. It IS Earth rock.
  6. Profile photo of Runemang
    Runemang Male 30-39
    2676 posts
    June 9, 2014 at 4:40 pm
    Yeah, I remember that. Back before internet. Damn that sucked.
  7. Profile photo of elkingo
    elkingo Male 30-39
    5471 posts
    June 9, 2014 at 7:51 pm

  8. Profile photo of Runemang
    Runemang Male 30-39
    2676 posts
    June 10, 2014 at 6:36 pm

  9. Profile photo of 7eggert
    7eggert Male 30-39
    247 posts
    June 11, 2014 at 12:07 am
    I`ve seen a presentation about it: ZDFmediathek/beitrag/ video/1503612/ Die-Rueckseite- des-Mondes-

    First broadcast: 29.01.2012 ZDF

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