Earth's Moon: Why One Side Always Faces Us

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2015-04-02に共有
Only one side of the Moon ever faces us because Earth's force of gravity on it is not uniform. This is related to our ocean tides and a lengthening of days on Earth. Duration: 7:58.

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#physics #moon #lunar #astronomy

コメント (21)
  • I love how you explained this to me like I’m dumb because that sir I am, good science too you
  • I'm 50 years old. This is the first time in my life I have understand why we don't see the far side of the moon
  • @miss_B_
    I was not expecting, after so many years, to randomnly click on this video, after SO MANY and this be the one who made me understand. I am forever grateful
  • BEST EXPLANATION. I love how you added the yellow line. It made everything so easy
  • wow, I learned more in 8 minutes on this topic than in 8 days reading about this in school. Darn public school education.
  • Thank you, this made so much sense. I only wanted to find a visual aid for the moon facing one side of the planet and got an explanation for gravitational force, tidal change, and moon phase changes.
  • 🙌 I watched over 10 videos and even tried a practical demonstration with my cat but thankfully I stumbled across this video. This has been the best explanation. 👏👏👏
  • @jonm2416
    I just couldn't picture this at allll! It was getting me mad😠. I thought..its impossible for us not to see the back of the moon if it spins! I knew I needed a multimedia type diagram and thought I'd still be confused but this was perfect! Exactly what I needed to see because I have to visualize everything to truly understand it. Great video! Thank You!
  • Easy explanation for people with a school project and don’t have time for the video: This is called “synchronous rotation of the moon”. The side we see is the “near side”, while the one we don’t see is called the “far side”. Part of the reason we only see the near side is because of the rotation of the moon while it orbits the Earth. Why does it rotate like this? Because of the Earth’s gravitational pull and how large the moon is, the pull is stronger on the near side and the far side. This odd gravitational pull mechanism causes the near side to be “pulled” towards the Earth, causing it to face us. Did that help? Just thought I’d try to help the confused people in the comments.
  • I watched tons of youtube videos on this topic but still didn't understand until i got to find this video,, In just 2 minutes i understood 100%
  • C'mon guys this dude deserves a Nobel price for excellent teaching
  • @dinil5566
    Man why didn't you become my school teacher? 😅
  • this was the best animation for tidally locked astronomical bodies
  • I've watched loads of explanations on this and still had questions. It finally 'clicked' within the first 2 minutes of your explanation. THANK YOU so much 💓
  • @TheEgg185
    This is THE best explanation. If only all videos could be easy to understand like this. Most people do a terrible job explaining things.
  • When I was 10, I told my father that we only see one side of the moon from Earth. He told me that I was wrong. I told him that I learned this in school. He grounded me for talking back at him and told me to tell my teacher that she was wrong. Loving relationship obviously, but he was not the only person in my life to have such strong attachments to the idea that we see all sides of the moon from Earth. This phenomenon has always perplexed me. All one has to do is care enough to pay the slightest attention to our closest stellar neighbor to see that our view of its surface never changes, other than the shadow across its surface. It all goes to show that, not enough people look up. I guess they are afraid of getting bird poo in the eye. My wife was in her late 20s when she pointed out a strange object in the day sky. It was the moon. I often wonder how these enormous details are missed for entire lifetimes. I wonder what I, myself am ignorant too. Fortunately for life lessons, I do not allow cognitive dissonance to get in the way of learning something new every day. Thank you for the video from a decade in the future.