--- title: "Meaning & Key Takeaway of: Another class of universal truths is the…" description: "\"“Another class of universal truths is the conservation laws, where the amount of some measured quantity remains unchanged no matter what. The three mos..." image: "https://sms4smile.com/quotes/i/8d2/neil-degrasse-tyson-143_dark-matter_another-class-of-universal-truths-is-the_3192705.jpg" --- # Another class of universal truths is the conservation… ![“Another class of universal truths is the conservation laws, where the amount of some measured quantity remains unchanged no matter what. The three most important are the conservation of mass and energy, the conservation of linear and angular momentum, and the conservation of electric charge. These…” quote by Neil deGrasse Tyson](https://sms4smile.com/quotes/i/8d2/neil-degrasse-tyson-143_dark-matter_another-class-of-universal-truths-is-the_3192705.jpg) [Download](https://sms4smile.com/quotes/i/8d2/neil-degrasse-tyson-143_dark-matter_another-class-of-universal-truths-is-the_3192705.jpg) [Open image](https://sms4smile.com/quotes/i/8d2/neil-degrasse-tyson-143_dark-matter_another-class-of-universal-truths-is-the_3192705.jpg) > ““Another class of universal truths is the conservation laws, where the amount of some measured quantity remains unchanged no matter what. The three most important are the conservation of mass and energy, the conservation of linear and angular momentum, and the conservation of electric charge. These laws are in evidence on Earth, and everywhere we have thought to look—from the domain of particle physics to the large-scale structure of the universe. In spite of this boasting, all is not perfect in paradise. It happens that we cannot see, touch, or taste the source of eighty-five percent of the gravity we measure in the universe. This mysterious dark matter, which remains undetected except for its gravitational pull on matter we see, may be composed of exotic particles that we have yet to discover or identify. A small minority of astrophysicists, however, are unconvinced and have suggested that there is no dark matter—you just need to modify Newton’s law of gravity. Simply add a few components to the equations and all will be well. Perhaps”” [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. Fundamental physical quantities stay constant, yet most of the universe’s gravity is unseen, prompting debate over dark matter versus modified gravity. **In simple terms:** Conservation laws hold, but dark matter remains mysterious. Key Takeaway Consider both unseen matter and alternative theories. Themes physics cosmology uncertainty scientific method Mood curious analytical Type explanatory thought‑provoking When to use this quote - galaxy rotation studies - cosmic microwave background analysis - theoretical modeling - public science communication Key Concepts conservation laws dark matter modified gravity particle physics Questions to Reflect On - What evidence would convince skeptics of dark matter? - How do modified gravity theories address galaxy dynamics? A Different Perspective Some observations can be explained without invoking dark matter, but they often require complex adjustments. ★ ★ ★ ★ ★ No ratings yet [Dark matter](https://sms4smile.com/quotes/about/dark-matter/) [Gravity](https://sms4smile.com/quotes/about/gravity/) [Particle physics](https://sms4smile.com/quotes/about/particle-physics/) [Truth](https://sms4smile.com/quotes/about/truth/) ## Related quotes > [“Dark matter is a mysterious substance that has gravity but does not interact with light in any known way.”](https://sms4smile.com/quotes/neil-degrasse-tyson/dark-matter-is-a-mysterious-substance-that-has-gravity-but-does-not/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [“The Five Great Problems in Theoretical Physics: Problem 1: Combine general relativity and quantum theory into a single theory that can claim to be…](https://sms4smile.com/quotes/lee-smolin/the-five-great-problems-in-theoretical-physics-problem-1-combine/) [Lee Smolin](https://sms4smile.com/quotes/author/lee-smolin/) > [To those who think that the law of gravity interferes with their freedom, there is nothing to say.](https://sms4smile.com/quotes/lionel-tiger/to-those-who-think-that-the-law-of-gravity-interferes-with-their/) [Lionel Tiger](https://sms4smile.com/quotes/author/lionel-tiger/) > [It's not like there's a law against flying." 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If you fall off a building…](https://sms4smile.com/quotes/mickael-bernard-beckwith/we-live-in-a-universe-in-which-there-are-laws-just-as-there-is-a-law/) Mickael Bernard Beckwith > [An apple fell and Newton discovered the law of gravity. Hundreds of bombs fell on Palestine and no one discovered the law of humanity.](https://sms4smile.com/quotes/danish/an-apple-fell-and-newton-discovered-the-law-of-gravity-hundreds-of/) [Danish](https://sms4smile.com/quotes/author/danish/) > [You know how sometimes you lie in bed at night and think, “What if the law of gravity just wears out and lets go…](https://sms4smile.com/quotes/elaine-may/you-know-how-sometimes-you-lie-in-bed-at-night-and-think-what-if-the/) [Elaine May](https://sms4smile.com/quotes/author/elaine-may/) > [The laws of God, like the law of gravity, do not depend upon how I feel about them. 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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. 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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 Dark matter quotes > [The best theory comes from string theory, which states that dark matter is nothing but a higher vibration of the string. We are, in…](https://sms4smile.com/quotes/michio-kaku/the-best-theory-comes-from-string-theory-which-states-that-dark/) [Michio Kaku](https://sms4smile.com/quotes/author/michio-kaku/) > [You're entitled to say, if you're so smart, why don't you tell me what that dark matter is? And I'll have to confess I…](https://sms4smile.com/quotes/jim-peebles/you-re-entitled-to-say-if-you-re-so-smart-why-don-t-you-tell-me-what/) [Jim Peebles](https://sms4smile.com/quotes/author/jim-peebles/) > [“Christopher Savage have calculated that in reasonable models, we expect about ten dark-matter particles to interact with the atoms in a typical human body…](https://sms4smile.com/quotes/sean-carroll/christopher-savage-have-calculated-that-in-reasonable-models-we/) [Sean Carroll](https://sms4smile.com/quotes/author/sean-carroll/) > [I spent most of my career doing high-energy physics, quarks, dark matter, string theory and so on.](https://sms4smile.com/quotes/geoffrey-west/i-spent-most-of-my-career-doing-high-energy-physics-quarks-dark/) [Geoffrey West](https://sms4smile.com/quotes/author/geoffrey-west/) > [“For the moment we might very well can them DUNNOS (for Dark Unknown Nonreflective Nondetectable Objects Somewhere).”](https://sms4smile.com/quotes/bill-bryson/for-the-moment-we-might-very-well-can-them-dunnos-for-dark-unknown/) [Bill Bryson](https://sms4smile.com/quotes/author/bill-bryson/) > [From a scientific point of view, our mission is to seek answers to the fundamental questions about the universe. 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They can be found in the patterns of trees, branches, and ferns, in which each part appears…](https://sms4smile.com/quotes/joseph-p-kauffman/examples-of-fractals-are-everywhere-in-nature-they-can-be-found-in/) [Joseph P. Kauffman](https://sms4smile.com/quotes/author/joseph-p-kauffman/) > [Science has proved that everything is energy, and now they have dark energy, dark matter. They don't call it all-embracing consciousness; they call it…](https://sms4smile.com/quotes/dave-davies/science-has-proved-that-everything-is-energy-and-now-they-have-dark/) [Dave Davies](https://sms4smile.com/quotes/author/dave-davies/) > [I did not set out to explain the extinction of the dinosaurs. 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The organization continues to act as if culture were dark matter, something…](https://sms4smile.com/quotes/grant-david-mccracken/that-culture-is-a-a-critical-resource-the-organization-ignores/) [Grant David McCracken](https://sms4smile.com/quotes/author/grant-david-mccracken/) > [“Most astrophysicists believe that the force holding stars and galaxies together—the thing that makes our whole universe work—comes from a theoretical substance we can’t…](https://sms4smile.com/quotes/blake-crouch/most-astrophysicists-believe-that-the-force-holding-stars-and/) [Blake Crouch](https://sms4smile.com/quotes/author/blake-crouch/) > [“In the vast spectrum of space-time’s coeternal continuum, I am but a glint of bundled energy held together by the translucent fiber of creative…](https://sms4smile.com/quotes/kilroy-j-oldster/in-the-vast-spectrum-of-space-time-s-coeternal-continuum-i-am-but-a/) [Kilroy J. Oldster](https://sms4smile.com/quotes/author/kilroy-j-oldster/) [Browse all 119 Dark matter quotes ](https://sms4smile.com/quotes/about/dark-matter/) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Quotation", "text": "“Another class of universal truths is the conservation laws, where the amount of some measured quantity remains unchanged no matter what. The three most important are the conservation of mass and energy, the conservation of linear and angular momentum, and the conservation of electric charge. These laws are in evidence on Earth, and everywhere we have thought to look—from the domain of particle physics to the large-scale structure of the universe. In spite of this boasting, all is not perfect in paradise. It happens that we cannot see, touch, or taste the source of eighty-five percent of the gravity we measure in the universe. This mysterious dark matter, which remains undetected except for its gravitational pull on matter we see, may be composed of exotic particles that we have yet to discover or identify. A small minority of astrophysicists, however, are unconvinced and have suggested that there is no dark matter—you just need to modify Newton’s law of gravity. Simply add a few components to the equations and all will be well. 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