Guillermo Gonzalez Extends “Privileged Planet” Arguments to Space Travel

BIO-Complexity, Circumstellar Habitable Zone, earth, Exoplanets, fuel, gravity, Guillermo Gonzalez, Industrial Revolution, Jay Richards, NASA, Peggy Whitson, Physics, Earth & Space, rockets, solar system, space travel, super-earths, The Privileged Planet
As outlined in the book The Privileged Planet, by Guillermo Gonzalez and Jay Richards, the Earth is not only fine-tuned for life, but is also well-designed to allow us to make scientific discoveries. A new BIO-Complexity paper by Guillermo Gonzalez, “The Solar System: Favored for Space Travel,” extends privileged planet arguments to our ability to travel in space. Gonzalez previously summarized some of his arguments here, but it’s worth outlining some of his arguments. Many of the exoplanets that are being discovered are giant “super-earths,” planets with a mass up to 10X Earth’s mass. These planets pose a problem for space travel. As the gravity of a planet increases, so does the amount of fuel that is needed for a rocket to escape the gravity of the planet and reach space. As Gonzalez puts it,…
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Is Space Travel Our Destiny?

Abraham Loeb, atmosphere, BIO-Complexity, distance, Hubble Space Telescope, hydrogen, interstellar dust, interstellar ship, Mike Hippke, Milky Way, Neptune, oxidizers, oxygen, Physics, Earth & Space, Proxima Centauri, rockets, satellite TV, solar system, space travel, super-earths, The Privileged Planet, Tsiolkovsky equation, Uranus
A few days ago I published the paper “The Solar System: Favored for Space Travel” in the journal BIO-Complexity. I thought it would be helpful for me to give a short summary of the paper to Evolution News readers. I was motivated to do the study after two papers were published in 2018 on the difficulty of launching rockets from super-earths. Super-earths are the most common type of planet that are being discovered around exoplanets. They are somewhat loosely defined as being larger and more massive than Earth but smaller and less massive than Uranus or Neptune. From observations, super-earths seem to transition from rocky to gas-dominated composition above 1.5 times the size of Earth.  Two Studies Together, the two studies not only showed that it is more difficult to…
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