Results 1 to 10 of 10

Thread: Darkside of the moon

  1. #1
    Dangerous Dilettante
    Earl's Avatar
    Join Date
    Jan 2006
    Posts
    79,266
    Blog Entries
    21
    Thumbs Up
    Received: 741
    Given: 1,763
    Great Britain

    Default Darkside of the moon

    Is it true that we only ever see one half of the moon surface, and the other half is constantly hidden? Doesn't the moon spin on its axis like earth does?

    0 Not allowed!

  2. #2
    Bites yer ankles! Snapper's Avatar
    Join Date
    Aug 2006
    Location
    In the hills outside the Centre of Evil!
    Posts
    2,476
    Thumbs Up
    Received: 78
    Given: 80
    UK

    Default Re: Darkside of the moon

    yes... but it spins roughly at the same time that it takes to orbit us so its always away from us... either that or its actually a big TV Studio with Ed Harris hiding in it!

    0 Not allowed!

  3. #3
    Don't Blink!
    timey's Avatar
    Join Date
    Dec 2006
    Location
    1969 (I blinked)
    Posts
    43,779
    Blog Entries
    2
    Thumbs Up
    Received: 2,182
    Given: 2,240
    Scotland

    Default Re: Darkside of the moon

    Yes, as Snapper says it does spin on its axis but it spins once in every orbit around the Earth. However, we do see see slightly more than 50% of the surface due to libration, which is due to the Moon's orbit not being perfectly circular. Therefore, sometimes the Moon moves faster than the spin so we see a little bit of one side, then it moves slower in another part of its orbit so we see a little bit of the other side. Also, the side facing away from Earth is not properly called the dark side, but the far side. We see the dark side regularly as it is the part not lit by the Sun.

    0 Not allowed!

  4. #4
    Neddie Seagoon
    Ernest Rants's Avatar
    Join Date
    Nov 2006
    Location
    Middle England
    Posts
    13,364
    Thumbs Up
    Received: 126
    Given: 4

    Default Re: Darkside of the moon

    this is the kinda shit that makes my head hurt

    0 Not allowed!
    kiddie playdate girlsgogames com - Darkside of the moon

  5. #5
    Dangerous Dilettante
    Earl's Avatar
    Join Date
    Jan 2006
    Posts
    79,266
    Blog Entries
    21
    Thumbs Up
    Received: 741
    Given: 1,763
    Great Britain

    Default Re: Darkside of the moon

    I've been having this argument with my boss and he even managed to convince me he was right today, and that the moon doesn't spin on its axis. Didn't help that I started Googling about it, and the internerd is full of people who share his opinion.

    Today my boss built a model with a wheel on an arm and demonstrated how you can spin the arm around a central axis and the satellite doesn't spin on its axis. And I fucking fell for it.

    I'll try again tomorrow with a better demonstration.

    0 Not allowed!

  6. #6
    Don't Blink!
    timey's Avatar
    Join Date
    Dec 2006
    Location
    1969 (I blinked)
    Posts
    43,779
    Blog Entries
    2
    Thumbs Up
    Received: 2,182
    Given: 2,240
    Scotland

    Default Re: Darkside of the moon

    Just goes to prove that what is on the internet is not always right, in fact most of it is wrong or at least inaccurate. The thing is, it's all relative. You could say that the moon doesn't spin on its axis relative to the Earth (it is synchronous with the Earth), but in relation to space, and to the sun, it does spin, and it has a "day" of around 29.5 Earth days, so it has to spin or this wouldn't happen.

    I'd love to see how this demonstration worked as I can't quite picture it in my head.

    0 Not allowed!

  7. #7
    Dangerous Dilettante
    Earl's Avatar
    Join Date
    Jan 2006
    Posts
    79,266
    Blog Entries
    21
    Thumbs Up
    Received: 741
    Given: 1,763
    Great Britain

    Default Re: Darkside of the moon

    What he had was a wheel attached to an arm. He spun the arm around a central axis, like the moon orbiting the Earth, and noted that the wheel wasn't spinning on its axle, therefore it wasn't rotating.

    I couldn't seem to explain it away, it clearly wasn't spinning on it's axle, so therefore wasn't rotating.

    Wasn't till later I realised that it didn't spin on the axle, because the axle was also spinning on its axis.

    I thought I'd go in today and explain it to him, it's actually really simple.

    Spent the entire morning doing no work, just arguing like fuck.

    In the end I built his model again and demonstrated using that, but he still wasn't happy about it. Kept saying that it had to be in relation with the Earth's axis.

    0 Not allowed!

  8. #8
    Don't Blink!
    timey's Avatar
    Join Date
    Dec 2006
    Location
    1969 (I blinked)
    Posts
    43,779
    Blog Entries
    2
    Thumbs Up
    Received: 2,182
    Given: 2,240
    Scotland

    Default Re: Darkside of the moon

    Ah, I see. It's the simple factor of what it's spinning in relation to then. In relation to the Earth is not spinning, but to everything else it essentially is.

    0 Not allowed!

  9. #9
    Dangerous Dilettante
    Earl's Avatar
    Join Date
    Jan 2006
    Posts
    79,266
    Blog Entries
    21
    Thumbs Up
    Received: 741
    Given: 1,763
    Great Britain

    Default Re: Darkside of the moon

    Yeah, it is spinning on its axis.

    He kept comparing it to the pedals on a bicycle. When the pedal on a bike doesn't turn on its axle the same side would face the middle. As you pedal it, it does turn on its axle, but when it turns on its axle, it doesn't turn on its axis. I've realised the difference between axle and axis, but every time I tried explaining it he just wouldn't listen.

    It got even more over complicated because my demonstration just used two mugs, with no arm connecting them. My gaffer couldn't get over the idea that the two objects must be 'fixed' together just as the moon is 'fixed' to the earth by gravity. It went off into a bit of a tangent then about how gravity works, and it just got even dafter.

    0 Not allowed!

  10. #10
    Don't Blink!
    timey's Avatar
    Join Date
    Dec 2006
    Location
    1969 (I blinked)
    Posts
    43,779
    Blog Entries
    2
    Thumbs Up
    Received: 2,182
    Given: 2,240
    Scotland

    Default Re: Darkside of the moon


    0 Not allowed!

Today's Posts New Posts

Similar Threads

  1. Moon
    By Jules in forum Movies
    Replies: 4
    Last Post: 30-01-2013, 11:44
  2. The Moon
    By Major Starbold in forum General Discussion
    Replies: 4
    Last Post: 25-02-2012, 20:37
  3. Moon
    By Alpha in forum Movies
    Replies: 3
    Last Post: 29-03-2010, 14:53
  4. New Moon
    By NYGal in forum Movies
    Replies: 18
    Last Post: 18-09-2009, 19:18
  5. A red moon but only one!??
    By Ck in forum Natter
    Replies: 23
    Last Post: 27-08-2007, 21:26

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •