{ "item_title" : "The Physics of Rockets and Space Travel", "item_author" : [" Allan Clifford "], "item_description" : "A machine taller than a skyscraper, filled with a million gallons of explosive fuel, and three humans strapped to the top. How does it actually work? Every rocket launch is a war against physics - against gravity, against the tyranny of the rocket equation, against the brutal fire of reentry. And yet we win. This book explains exactly how. Allan Clifford takes you from the launch pad to the edge of interstellar space, unpacking the real science of rocketry in clear, vivid language that anyone can follow. Inside, you will discover: - The tyranny of the rocket equation - why reaching orbit is so brutally hard, and how staging beats the math- Delta-V: the currency of space - how every mission is budgeted before a single engine lights- Fire and fury - chemical rockets, ion drives, and the nuclear engines of tomorrow- Why you can't just fly straight up - the surprising truth about what being in orbit really means- Stealing momentum from planets - the gravity assists that flung our probes across the solar system- The fiery return - reentry, heat shields, and surviving a 25,000 km/h plunge- Keeping humans alive - life support, radiation, and the fragile bubble of a spacecraft- The interstellar challenge - what it would truly take to reach another star From Newton's laws to Hohmann transfers, from the Saturn V to reusable boosters and beyond, this is the complete story of how humanity escapes Earth - with no equations required, just the awe of understanding. The countdown has started. Climb aboard.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/9/79/818/552/9798185524800_b.jpg", "price_data" : { "retail_price" : "17.99", "online_price" : "17.99", "our_price" : "17.99", "club_price" : "17.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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