Entering Space: Creating a Spacefaring Civilization"Robert Zubrin is a true engineering genius like the heroic engineers of the past." --Frederick Turner, American Enterprise Using nuts-and-bolts engineering and a unique grasp of human history, Robert Zubrin takes us to the not-very-distant future, when our global society will branch out into the universe. From the current-day prospect of lunar bases and Mars settlements to the outer reaches of other galaxies, Zubrin delivers the most important and forward-looking work on space and the true possibilities of human exploration since Carl Sagan's Cosmos. Sagan himself said of Zubrin's humans-to-Mars plan, "Bob Zubrin really, nearly alone, changed our thinking on this issue." With Entering Space, he takes us further, into the prospect of human expansion to the outer planets of our own solar system--and beyond. |
From inside the book
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... ship will take about six months to reach the asteroid , as despite its close distance to Earth a Hohmann transfer elliptical trajectory from one side of Earth's orbit to the other will probably be needed to get there . Upon in ...
... ship up to 10 percent the speed of light . The kinetic energy of the ship at flight speed would be 450 trillion MJ ( 4.5 × 1,020J ) , or 125 trillion kWh . Due to the law of conservation of energy , this is the minimum amount of energy ...
... ship will be needed . But now let's say that instead of exploding the bombs in the middle of nowhere , we decide to ... ship's speed . If it is much less , the ship will have moved away before the expanding plasma cloud has a chance to ...