Human civilizations' longest lasting artifacts are not the great Pyramids of Giza, nor the cave paintings at Lascaux, but the communications satellites that circle our planet. In a stationary orbit... This description may be from another edition of this product.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.