The story of planetary research from ancient astronomers to more recent spacecraft missions.

It has been over forty years since the Voyager mission sent the twin space probes into space. They traveled to Jupiter, Saturn, Uranus, and Neptune and now they journey beyond our solar system into interstellar space, where no probe has ventured before. Learn the fascinating story of the scientists, how the Voyager probes work, where the probes have been and what they’ve seen, and what they carry on board—including the Golden Record, a recording of sounds and images about life on Earth. Critically acclaimed science writer Alexandra Siy chronicles the ongoing saga of the Voyagers in a lively story full of nail-biting moments, inspiring scientists, and incredible NASA images. An engaging and captivating STEM title that deserves a place in most libraries—School Library Journal STARRED REVIEW A lively, informative, and inspiring story of space exploration—Kirkus Reviews A timely introduction to the Voyager mission—Booklist It's an engaging and readily accessible account of a remarkable—and ongoing—scientific success story—Publisher's Weekly Chicago Public Library’s 2017 Best of the Best Books selection

Was there a meaningful stellar sign over Bethlehem? What did it look like to someone looking up at the night sky? Did wise men really come from the East seeking Israel’s Messiah sometime after the birth of Jesus? The biblical account of the wise men and the star that announced the coming of the Messiah of Israel has inspired and puzzled people for two millennia. Important aspects of Babylonian astronomy seem to be involved in understanding the star’s appearing. But in addition, The Lion Led the Way also explores the men and events from a profoundly Jewish perspective. The traditional Jewish names of stars and planets, Jewish symbols, as well as Jewish dates, all seem to be keys to unlocking the mystery of the famous star. The star of Bethlehem was not the brightest of the heavenly lights, nor was it the most spectacular starry manifestation of all time. However, it was part of the most meaningful set of celestial events in human history. The God of Israel is surprising. His ways are not our ways; his thoughts are not our thoughts. The star gives us a concrete example of God’s intervention in the universe. Book website: www.star-of-bethlehem.info

A riveting road map to the development of modern scientific thought. In the tradition of her perennial bestseller The Well-Educated Mind, Susan Wise Bauer delivers an accessible, entertaining, and illuminating springboard into the scientific education you never had. Far too often, public discussion of science is carried out by journalists, voters, and politicians who have received their science secondhand. The Story of Western Science shows us the joy and importance of reading groundbreaking science writing for ourselves and guides us back to the masterpieces that have changed the way we think about our world, our cosmos, and ourselves. Able to be referenced individually, or read together as the narrative of Western scientific development, the book's twenty-eight succinct chapters lead readers from the first science texts by Hippocrates, Plato, and Aristotle through twentieth-century classics in biology, physics, and cosmology. The Story of Western Science illuminates everything from mankind's earliest inquiries to the butterfly effect, from the birth of the scientific method to the rise of earth science and the flowering of modern biology. Each chapter recommends one or more classic books and provides entertaining accounts of crucial contributions to science, vivid sketches of the scientist-writers, and clear explanations of the mechanics underlying each concept. The Story of Western Science reveals science to be a dramatic undertaking practiced by some of history's most memorable characters. It reminds us that scientific inquiry is a human pursuit—an essential, often deeply personal, sometimes flawed, frequently brilliant way of understanding the world. The Story of Western Science is an "entertaining and unique synthesis" (Times Higher Education), a "fluidly written" narrative that "celebrates the inexorable force of human curiosity" (Wall Street Journal), and a "bright, informative resource for readers seeking to understand science through the eyes of the men and women who shaped its history" (Kirkus). Previously published as The Story of Science.

The planet Venus is the closest neighbour to the Earth and in several respects similar to our globe. It revolves around the Sun at an average distance of 0. 72 astronomical units, in an elliptical orbit of eccentricity 0. 007. The corresponding 3 numbers for the Earth are 1 and 0. 017. The mean density of Venus is 5. 2 g/cm , 3 that of the Earth 5. 5 g/cm . Venus’ acceleration of gravity at its equator is 8. 9 2 2 m/s , compared with 9. 8 m/s at the Earth. The escape velocity is 10. 4 km/s, while the corresponding ?gure of the Earth is 11. 2 km/s. Although the mass of Venus is somewhat smaller than that of the Earth – the ratio is M /M =0. 815 V E – the diameters of the two planets are almost the same. In other words, Venus is indeed a sister planet of the Earth. In earlier times, when almost nothing was known about the physical con- tions of Venus, the similarity appeared even stronger than today. Not only was Venus’ period of rotation thought to be close to that of the Earth, it was also p- sible (and indeed common) to imagine intelligent life on Venus.

Beginning in the early days of the Space Age - well before the advent of manned spaceflight - the United States, followed soon by other nations, undertook an ambitious effort to study the planets of the solar system. The remarkable fruits of this research revolutionized the public's view of their celestial neighbors, capturing the imaginations of people from all backgrounds like nothing else save the Apollo lunar missions. From the first space probes to the most recent planetary rovers, they have continually delivered impressive discoveries and reshaped our understanding of the cosmos. Offering fascinating investigations into this crucial chapter in space history, this collection of specially commissioned essays from leading historians opens new vistas in our understanding of the development of planetary science.