Kategoria BISAC: Science >> Space Science - Astronomy

Recent astronomical observations indicate that a black hole is approaching our solar system. Although the black hole will pass more distant than the orbit of Saturn, its gravity will slightly change the Earth's orbit. The year will become 378 days long. During winter it will be 6% closer to the sun and during...

Why use the traditional approach to study the stars when you can turn computers, handheld devices, and telescopes into out-of-this-world stargazing tools? Whether you're a first timer or an advanced hobbyist, you'll find Astronomy Hacks both useful and fun. From upgrading your optical finder to photographing stars, this book is the perfect cosmic companion.This handy field guide covers the basics of observing, and what you need to know about tweaking, tuning, adjusting, and tricking out a 'scope. Expect priceless tips and tools for using a Dobsonian Telescope, the large-aperture telescope...

Every night, astronomers use a new generation of giant telescopes at observatories around the world to study phenomena at the forefront of science. By focusing on the history of the Gemini Observatory--twin 8-meter telescopes located on mountain peaks in Hawaii and Chile--Giant Telescopes tells the story behind the planning and construction of modern scientific tools, offering a detailed view of the technological and political transformation of astronomy in the postwar era.

Drawing on interviews with participants and archival documents, W. Patrick McCray describes the...

The Dutch telescope and the Italian scientist Galileo have long enjoyed a durable connection in the popular mind--so much so that it seems this simple glass instrument transformed a rather modest middle-aged scholar into the bold icon of the Copernican Revolution. And yet the extraordinary speed with which the telescope changed the course of Galileo's life and early modern astronomy obscures the astronomer's own curiously delayed encounter with the instrument. This book considers the lapse between the telescope's creation in The Hague in 1608 and Galileo's alleged acquaintance with...

Have you ever wondered what happened before the Big Bang, or how we would colonize Mars, or what an alien invasion might really be like? Astronomer Bob Berman has, and in Cosmic Adventure, a collection of twenty-six profound to outrageous essays, he takes readers on a mind-bending tour of the universe, including our own planet Earth. From the most extraordinary cosmic phenomena to the basics of the natural world, Berman challenges us to look at the facts, discoveries, concepts, and awesome wonders of our cosmos in a new light. Written in entertaining, jargon-free language that even a...

Ptolemy's Almagest is one of the most influential scientific works in history. A masterpiece of technical exposition, it was the basic textbook of astronomy for more than a thousand years, and still is the main source for our knowledge of ancient astronomy. This translation, based on the standard Greek text of Heiberg, makes the work accessible to English readers in an intelligible and reliable form. It contains numerous corrections derived from medieval Arabic translations and extensive footnotes that take account of the great progress in understanding the work made in this...

From Hipparchus and Ptolemy in the ancient world, through Copernicus and Brahe in the sixteenth century, astronomers had used geometrical models to give a kinematic account of the movements of the sun, moon, and planets. Johannes Kepler revolutionized this most ancient of sciences by being the first to understand astronomy as a part of physics. By closely and clearly analyzing the texts of Kepler's great astronomical works, in particular the Astronomia nova of 1609, Bruce Stephenson demonstrates the importance of Kepler's physical principles--principles now known to be...

Johannes Kepler contributed importantly to every field he addressed. He changed the face of astronomy by abandoning principles that had been in place for two millennia, made important discoveries in optics and mathematics, and was an uncommonly good philosopher. Generally, however, Kepler's philosophical ideas have been dismissed as irrelevant and even detrimental to his legacy of scientific accomplishment. Here, Rhonda Martens offers the first extended study of Kepler's philosophical views and shows how those views helped him construct and justify the new astronomy.

Martens...

Could Einstein have possibly anticipated directly testing the most captivating prediction of general relativity, that there exist isolated pockets of spacetime shielded completely from our own? Now, almost a century after that theory emerged, one of the world's leading astrophysicists presents a wealth of recent evidence that just such an entity, with a mass of about three million suns, is indeed lurking at the center of our galaxy, the Milky Way--in the form of a supermassive ''black hole''

With this superbly illustrated, elegantly written, nontechnical account of the most...

In 2004, Venus crossed the sun's face for the first time since 1882. Some did not bother to step outside. Others planned for years, reserving tickets to see the transit in its entirety. But even this group of astronomers and experience seekers were attracted not by scientific purpose but by the event's beauty, rarity, and perhaps--after this book--history. For previous sky-watchers, though, transits afforded the only chance to determine the all-important astronomical unit: the mean distance between earth and sun.

Eli Maor tells the intriguing tale of the five Venus transits...