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Beyond Death: When Longer Lives Meet a Finite Planet
One of the comments I received after writing “The Age of Re-engineering: How Science Is Rewriting the Limits of Human Life” sparked a fascinating, if sobering, question. It was both simple and profound: “What happens if we actually succeed? What … Continue reading
Posted in Science
Tagged birth rate, death rate, Dyson Sphere, Dyson Swarm, Earth, elves, environment, generational spacecraft, homesteading, immortality, JRR Tolkien, lifespan, longevity, Mars, medicine, Moon, mortality, overpopulation, population decline, population explosion, recycling, reproduction, science, space, terraforming, Venus
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Falling Forever: Why 200 Miles Up Feels Like Zero Gravity
After I wrote about losing gravity, I was asked a great follow-up question: if the Earth is a massive object warping the fabric of spacetime and pulling everything toward it, why do astronauts appear like they’re floating in a giant … Continue reading
Posted in Science
Tagged acceleration, artificial gravity, centrifugal force, Earth, freefall, general relativity, generational spacecraft, geodesic, Gravitron, gravity, International Space Station, Low Earth Orbit, mass, NASA, orbit, orbital mechanics, physics, relativity, science, spacetime, Sun, Vomit Comet, weight, weightlessness
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