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Christophe Galfard Quotes

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Famous Christophe Galfard Quotes

“The air around you is filled with floating atoms, sliding down the Earth's spacetime curve. Atoms first assembled in the cores of long-dead stars. Atoms within you, everywhere, disintegrating in radioactive decays. Beneath your feet, the floor - whose electrons refuse to let yours pass, thus making you able to stand and walk and run. Earth, your planet, a lump of matter made out of the three quantum fields known to mankind, held together by gravity, the so-called fourth force (even though it isn't a force), floating within and through spacetime.”

MatterEarthForceStarsAirMankindAtomsGravityDeadDecayQuantumWalkRunPlanetElectronsStandDisintegrationAtomFloorSpacetimeRadioactiveAssembledRadioactive DecayCoresQuantum Fields
Book:The Universe in Your Hand: A Journey Through Space, Time, and Beyond
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“Everyone should be very grateful radioactivity exists at all. It can kill you, yes, but without it you wouldn't have been born in the first place. On Earth, deep under your feet, our planet happens to contain many atoms that do decay, all the time. Less so now than in the past, but still, Earth's mantle is radioactive. When atoms decay there, the particles they emit bump into their neighbours and generate heat, the very heat that contributes to keeping our planet warm. Without radioactivity, there would be no seismic or volcanic activity. The surface of the Earth would have been dead cold billions of yeras ago. Life as we know it would probably not exist at all.”

LifeEarthPastBornColdBirthGratefulWarmSurfaceHeatDeepAtomsDeadDecayKillNowPlanetEveryoneRadioactivityExistsEmitSeismicVolcanismMantleVolcanic
Book:The Universe in Your Hand: A Journey Through Space, Time, and Beyond
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“Waking up in the same place in which you dozed off has never happened either to you or to anyone else. Ever. Earth does not stop moving when you sleep. Every hour that passes, Earth travels a little more than 800,000 kilometres around the centre of our galaxy. And so do you. That's the equivalent of about twenty trips around the planet. Every hour. No one minds, though, as long as their bed stays still beneath their body.”

BodyEarthSleepMovementBedCentreGalaxyNeverMoveWaking UpTripHourTripsKilometresDoze Off
Book:The Universe in Your Hand: A Journey Through Space, Time, and Beyond
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