---
title: "Meaning & Key Takeaway of: Earth has also tidally locked the Moon…"
description: "\"“Earth has also tidally locked the Moon, leaving it with identical periods of rotation on its axis and revolution around Earth. Wherever and whenever t..."
image: "https://sms4smile.com/quotes/i/841/neil-degrasse-tyson-143_astrophysics_earth-has-also-tidally-locked-the-moon-l_856398.png"
---

#  Earth has also tidally locked the Moon, leaving it with…

![“Earth has also tidally locked the Moon, leaving it with identical periods of rotation on its axis and revolution around Earth. Wherever and whenever this happens, the locked moon shows only one face to its host planet.” quote by Neil deGrasse Tyson](https://sms4smile.com/quotes/i/841/neil-degrasse-tyson-143_astrophysics_earth-has-also-tidally-locked-the-moon-l_856398.png)   [Download](https://sms4smile.com/quotes/i/841/neil-degrasse-tyson-143_astrophysics_earth-has-also-tidally-locked-the-moon-l_856398.png) [Open image](https://sms4smile.com/quotes/i/841/neil-degrasse-tyson-143_astrophysics_earth-has-also-tidally-locked-the-moon-l_856398.png)

> ““Earth has also tidally locked the Moon, leaving it with identical periods of rotation on its axis and revolution around Earth. Wherever and whenever this happens, the locked moon shows only one face to its host planet.””

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

The Moon is tidally locked, showing only one side to Earth because its rotation period matches its orbital period.

**In simple terms:** The Moon always faces Earth with one side.

Key Takeaway

Understand tidal locking in celestial bodies.

Themes

astronomy physics celestial mechanics tidal forces planetary science

Mood

informative curious

Type

scientific educational

When to use this quote

- education
- science communication
- planetary research
- space missions

Key Concepts

Gravity rotation orbit synchronization celestial bodies

Questions to Reflect On

- Why does tidal locking occur?
- What other moons are tidally locked?

A Different Perspective

Complex dynamics can be oversimplified.

★ ★ ★ ★ ★   No ratings yet

[Astrophysics](https://sms4smile.com/quotes/about/astrophysics/)

## Related quotes

> [In the old days, people thought that wouldn't be amenable to life. Modern studies with computers have shown that it's okay to be tidally…](https://sms4smile.com/quotes/sara-seager/in-the-old-days-people-thought-that-wouldn-t-be-amenable-to-life/)

[Sara Seager](https://sms4smile.com/quotes/author/sara-seager/)

> [“You cannot know God’s will in a day, in a year, perhaps not even in a lifetime. And yet, I am convinced that everything…](https://sms4smile.com/quotes/michele-chynoweth/you-cannot-know-god-s-will-in-a-day-in-a-year-perhaps-not-even-in-a/)

Michele Chynoweth

> [Some day we'll move into space and start ensuring the survival of our species beyond Earth, whether it happens in a hundred years or…](https://sms4smile.com/quotes/neil-turok/some-day-we-ll-move-into-space-and-start-ensuring-the-survival-of-our/)

[Neil Turok](https://sms4smile.com/quotes/author/neil-turok/)

> [“Nonetheless, they remind us that ignorance is the natural state of mind for a research scientist.”](https://sms4smile.com/quotes/neil-degrasse-tyson/nonetheless-they-remind-us-that-ignorance-is-the-natural-state-of/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [I try to show the public that chemistry, biology, physics, astrophysics is life. It is not some separate subject that you have to be…](https://sms4smile.com/quotes/neil-degrasse-tyson/i-try-to-show-the-public-that-chemistry-biology-physics-astrophysics/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“Dark energy is a mysterious pressure in the vacuum of space that acts in the opposite direction of gravity, forcing the universe to expand…](https://sms4smile.com/quotes/neil-degrasse-tyson/dark-energy-is-a-mysterious-pressure-in-the-vacuum-of-space-that-acts/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [In astrophysics, we care about how matter, motion and energy manifest in objects and phenomenon in the universe. Stars are born. They live out…](https://sms4smile.com/quotes/neil-degrasse-tyson/in-astrophysics-we-care-about-how-matter-motion-and-energy-manifest/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“For reasons I have yet to understand, many people don’t like chemicals, which might explain the perennial movement to rid foods of them. Personally,…](https://sms4smile.com/quotes/neil-degrasse-tyson/for-reasons-i-have-yet-to-understand-many-people-don-t-like-chemicals/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“Filling out the entire electromagnetic spectrum, in order of low-energy and low-frequency to high-energy and high-frequency, we have: radio waves, micro waves, ROYGBIV, ultra…](https://sms4smile.com/quotes/neil-degrasse-tyson/filling-out-the-entire-electromagnetic-spectrum-in-order-of-low/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“In the beginning, there was physics. "Physics" describes how matter, energy, space, and time behave and interact with one another. The interplay of these…](https://sms4smile.com/quotes/neil-degrasse-tyson/in-the-beginning-there-was-physics-physics-describes-how-matter/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“The one we call Earth formed in a kind of Goldilocks zone around the Sun, where oceans remain largely in liquid form.”](https://sms4smile.com/quotes/neil-degrasse-tyson/the-one-we-call-earth-formed-in-a-kind-of-goldilocks-zone-around-the/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [Anyone who has wrestled knows that it's the hardest thing in the world to do. Anyone who says something else is the hardest thing…](https://sms4smile.com/quotes/neil-degrasse-tyson/anyone-who-has-wrestled-knows-that-it-s-the-hardest-thing-in-the/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [I look up at the night sky, and I know that, yes, we are part of this Universe, we are in this Universe, but…](https://sms4smile.com/quotes/neil-degrasse-tyson/i-look-up-at-the-night-sky-and-i-know-that-yes-we-are-part-of-this/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [It turns out that the history of astrophysics is where we perfected time keeping.](https://sms4smile.com/quotes/neil-degrasse-tyson/it-turns-out-that-the-history-of-astrophysics-is-where-we-perfected/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [The remarkable feature of physical laws is that they apply everywhere, whether or not you choose to believe in them. After the laws of…](https://sms4smile.com/quotes/neil-degrasse-tyson/the-remarkable-feature-of-physical-laws-is-that-they-apply-everywhere/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

## More by Neil deGrasse Tyson

> [I don't want to go into space because of war. I think we would if it was triggered. If China said they want to…](https://sms4smile.com/quotes/neil-degrasse-tyson/i-don-t-want-to-go-into-space-because-of-war-i-think-we-would-if-it/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [Quantum physics fluctuates all the time. But now the fluctuations are not just particles coming into and out of existence, which happens all the…](https://sms4smile.com/quotes/neil-degrasse-tyson/quantum-physics-fluctuates-all-the-time-but-now-the-fluctuations-are/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [In the movie, the stars above the ship bear no correspondence to any constellations in a real sky. Worse yet, while the heroine bobs...…](https://sms4smile.com/quotes/neil-degrasse-tyson/in-the-movie-the-stars-above-the-ship-bear-no-correspondence-to-any/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [The Pacific is the best toilet for satellites.](https://sms4smile.com/quotes/neil-degrasse-tyson/the-pacific-is-the-best-toilet-for-satellites/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [... informed ignorance provides the natural state of mind for research scientists at the ever-shifting frontiers of knowledge. People who believe themselves ignorant of…](https://sms4smile.com/quotes/neil-degrasse-tyson/informed-ignorance-provides-the-natural-state-of-mind-for-research/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [If you seek only easy problems to solve, then ultimately, there'll be nothing about you to distinguish yourself from others.](https://sms4smile.com/quotes/neil-degrasse-tyson/if-you-seek-only-easy-problems-to-solve-then-ultimately-there-ll-be/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [The caricature of science is that we hold tight to the theories we have, and shun challenges to them. That's just not true. In…](https://sms4smile.com/quotes/neil-degrasse-tyson/the-caricature-of-science-is-that-we-hold-tight-to-the-theories-we/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [New generations of humans inherit the acquired discoveries of generations past, allowing cosmic insight to accumulate without limit. Each discovery of science therefore adds…](https://sms4smile.com/quotes/neil-degrasse-tyson/new-generations-of-humans-inherit-the-acquired-discoveries-of/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [I've said multiple times that the world's first trillionaire is going to be the person who exploits the resources of asteroids, the natural resources…](https://sms4smile.com/quotes/neil-degrasse-tyson/i-ve-said-multiple-times-that-the-world-s-first-trillionaire-is-going/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [ They \[scientists of centuries past\] call on God only from the lonely and precarious edge of incomprehension. Where they feel certain about their explanations,… ](https://sms4smile.com/quotes/neil-degrasse-tyson/they-scientists-of-centuries-past-call-on-god-only-from-the-lonely/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [We explore our environment, more than we are compelled to utter poetry, when we're toddlers. We start doing that later. Before that happens, every…](https://sms4smile.com/quotes/neil-degrasse-tyson/we-explore-our-environment-more-than-we-are-compelled-to-utter-poetry/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [You can't have people making decisions about the future of the world who are scientifically illiterate. That's a recipe for disaster. And I don't…](https://sms4smile.com/quotes/neil-degrasse-tyson/you-can-t-have-people-making-decisions-about-the-future-of-the-world/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [Science surrounds you. It's not something that you can step aside, step over or push out of your way because you were never good…](https://sms4smile.com/quotes/neil-degrasse-tyson/science-surrounds-you-it-s-not-something-that-you-can-step-aside-step/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [The idea that God resides in the unknown is what philosophers call the God of the gaps. And we have this thing called science,…](https://sms4smile.com/quotes/neil-degrasse-tyson/the-idea-that-god-resides-in-the-unknown-is-what-philosophers-call/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [Everybody's got money for vacation time. Look at how much we all spend just to get - well, I get sick on the loop-the-loop…](https://sms4smile.com/quotes/neil-degrasse-tyson/everybody-s-got-money-for-vacation-time-look-at-how-much-we-all-spend/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

[Explore all 1,143 Neil deGrasse Tyson quotes ](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

## More Astrophysics quotes

> [“The toxicity of medical and industrial gas to the human depends on where it is used. A gas that is regarded as safe in…](https://sms4smile.com/quotes/steven-magee/the-toxicity-of-medical-and-industrial-gas-to-the-human-depends-on/)

[Steven Magee](https://sms4smile.com/quotes/author/steven-magee/)

> [“For reasons I have yet to understand, many people don’t like chemicals, which might explain the perennial movement to rid foods of them. Personally,…](https://sms4smile.com/quotes/neil-degrasse-tyson/for-reasons-i-have-yet-to-understand-many-people-don-t-like-chemicals/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“The one we call Earth formed in a kind of Goldilocks zone around the Sun, where oceans remain largely in liquid form.”](https://sms4smile.com/quotes/neil-degrasse-tyson/the-one-we-call-earth-formed-in-a-kind-of-goldilocks-zone-around-the/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“Nonetheless, they remind us that ignorance is the natural state of mind for a research scientist.”](https://sms4smile.com/quotes/neil-degrasse-tyson/nonetheless-they-remind-us-that-ignorance-is-the-natural-state-of/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [Some people seek meaning in life through personal gain, through personal relationship, or through personal experiences. However, it seems to me that being blessed…](https://sms4smile.com/quotes/michio-kaku/some-people-seek-meaning-in-life-through-personal-gain-through/)

[Michio Kaku](https://sms4smile.com/quotes/author/michio-kaku/)

> [“The arrow of time obscures memory of both past and future circumstance with innumerable fallacies, the least trivial of which is perception.”](https://sms4smile.com/quotes/ashim-shanker/the-arrow-of-time-obscures-memory-of-both-past-and-future/)

[Ashim Shanker](https://sms4smile.com/quotes/author/ashim-shanker/)

> [If we restructure things to see that the hero's journey is a degree in astrophysics rather than a journey to star in a reality…](https://sms4smile.com/quotes/john-green/if-we-restructure-things-to-see-that-the-hero-s-journey-is-a-degree/)

[John Green](https://sms4smile.com/quotes/author/john-green/)

> [It turns out that the history of astrophysics is where we perfected time keeping.](https://sms4smile.com/quotes/neil-degrasse-tyson/it-turns-out-that-the-history-of-astrophysics-is-where-we-perfected/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [I look up at the night sky, and I know that, yes, we are part of this Universe, we are in this Universe, but…](https://sms4smile.com/quotes/neil-degrasse-tyson/i-look-up-at-the-night-sky-and-i-know-that-yes-we-are-part-of-this/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [Anyone who has wrestled knows that it's the hardest thing in the world to do. Anyone who says something else is the hardest thing…](https://sms4smile.com/quotes/neil-degrasse-tyson/anyone-who-has-wrestled-knows-that-it-s-the-hardest-thing-in-the/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“Far from disproving the existence of God, astronomers may be finding more circumstantial evidence that God exists.”](https://sms4smile.com/quotes/robert-jastrow/far-from-disproving-the-existence-of-god-astronomers-may-be-finding/)

[Robert Jastrow](https://sms4smile.com/quotes/author/robert-jastrow/)

> [“Industrial liquid gas containers were left open and venting gas into the indoor environment in high altitude astronomy. On reflection, I realized that I…](https://sms4smile.com/quotes/steven-magee/industrial-liquid-gas-containers-were-left-open-and-venting-gas-into/)

[Steven Magee](https://sms4smile.com/quotes/author/steven-magee/)

> [The remarkable feature of physical laws is that they apply everywhere, whether or not you choose to believe in them. After the laws of…](https://sms4smile.com/quotes/neil-degrasse-tyson/the-remarkable-feature-of-physical-laws-is-that-they-apply-everywhere/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“In the beginning, there was physics. "Physics" describes how matter, energy, space, and time behave and interact with one another. The interplay of these…](https://sms4smile.com/quotes/neil-degrasse-tyson/in-the-beginning-there-was-physics-physics-describes-how-matter/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [“Filling out the entire electromagnetic spectrum, in order of low-energy and low-frequency to high-energy and high-frequency, we have: radio waves, micro waves, ROYGBIV, ultra…](https://sms4smile.com/quotes/neil-degrasse-tyson/filling-out-the-entire-electromagnetic-spectrum-in-order-of-low/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

[Browse all 114 Astrophysics quotes ](https://sms4smile.com/quotes/about/astrophysics/)

```json
{
    "@context": "https://schema.org",
    "@graph": [
        {
            "@type": "Quotation",
            "text": "“Earth has also tidally locked the Moon, leaving it with identical periods of rotation on its axis and revolution around Earth. Wherever and whenever this happens, the locked moon shows only one face to its host planet.”",
            "creator": {
                "@type": "Person",
                "name": "Neil deGrasse Tyson"
            },
            "isPartOf": {
                "@id": "https://sms4smile.com/quotes/#website"
            },
            "url": "https://sms4smile.com/quotes/neil-degrasse-tyson/earth-has-also-tidally-locked-the-moon-leaving-it-with-identical/",
            "about": {
                "@type": "Thing",
                "name": "Astrophysics"
            },
            "@id": "https://sms4smile.com/quotes/neil-degrasse-tyson/earth-has-also-tidally-locked-the-moon-leaving-it-with-identical/#quotation",
            "image": {
                "@type": "ImageObject",
                "@id": "https://sms4smile.com/quotes/i/841/neil-degrasse-tyson-143_astrophysics_earth-has-also-tidally-locked-the-moon-l_856398.png",
                "contentUrl": "https://sms4smile.com/quotes/i/841/neil-degrasse-tyson-143_astrophysics_earth-has-also-tidally-locked-the-moon-l_856398.png",
                "url": "https://sms4smile.com/quotes/i/841/neil-degrasse-tyson-143_astrophysics_earth-has-also-tidally-locked-the-moon-l_856398.png",
                "width": 1080,
                "height": 1080,
                "caption": "“Earth has also tidally locked the Moon, leaving it with identical periods of rotation on its axis and…” — Neil deGrasse Tyson",
                "creditText": "SMS4Smile Quotes",
                "creator": {
                    "@id": "https://sms4smile.com/quotes/#organization"
                }
            }
        },
        {
            "@type": "BreadcrumbList",
            "itemListElement": [
                {
                    "@type": "ListItem",
                    "position": 1,
                    "name": "Home",
                    "item": "https://sms4smile.com/"
                },
                {
                    "@type": "ListItem",
                    "position": 2,
                    "name": "Quotes",
                    "item": "https://sms4smile.com/quotes/"
                },
                {
                    "@type": "ListItem",
                    "position": 3,
                    "name": "Neil deGrasse Tyson",
                    "item": "https://sms4smile.com/quotes/author/neil-degrasse-tyson/"
                },
                {
                    "@type": "ListItem",
                    "position": 4,
                    "name": "“Earth has also tidally locked the...",
                    "item": "https://sms4smile.com/quotes/neil-degrasse-tyson/earth-has-also-tidally-locked-the-moon-leaving-it-with-identical/"
                }
            ],
            "@id": "https://sms4smile.com/quotes/neil-degrasse-tyson/earth-has-also-tidally-locked-the-moon-leaving-it-with-identical/#breadcrumb"
        },
        {
            "@type": "WebSite",
            "@id": "https://sms4smile.com/quotes/#website",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "publisher": {
                "@id": "https://sms4smile.com/quotes/#organization"
            }
        },
        {
            "@type": "Organization",
            "@id": "https://sms4smile.com/quotes/#organization",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "logo": {
                "@type": "ImageObject",
                "url": "https://sms4smile.com/quotes/wp-content/themes/sq/assets/icons/icon-512.png",
                "width": 512,
                "height": 512
            }
        }
    ]
}
```
