{"product_id":"how-to-travel-to-and-roger-ellman-9781088501719","title":"How To Travel To and Explore Mars or Proxima Centauri B","description":"Use of fuel is impractical for space exploration. The only fuel-free acceleration for space exploration is by controlled gravitation, and that is the only means for a flying vehicle to explore a distant planet and the only means of travel to it. Such control of gravitation is the subject and purpose of this book. Just as the sail-driven ships of past centuries explored the world with fuel-free travel by controlled use of the wind; a new gravitation technology will enable fuel-free exploration of space by control of the ubiquitous gravitational field.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Roger Ellman\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1088501710\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781088501719\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 08\/10\/2019\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 152\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.81lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 11.02h x 8.50w x 0.33d","brand":"Roger Ellman","offers":[{"title":"Paperback","offer_id":47305081159935,"sku":"9781088501719","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_abccb806-2a22-4267-a5e2-938e210b559a.jpg?v=1758829913","url":"https:\/\/www.whiterainbookhouse.com\/products\/how-to-travel-to-and-roger-ellman-9781088501719","provider":"WR Book House","version":"1.0","type":"link"}