Richard Walker 
Spectral Atlas for Amateur Astronomers [PDF ebook] 
A Guide to the Spectra of Astronomical Objects and Terrestrial Light Sources

Did the Universe have a beginning? Will it have an end? Or has it always been the same, never changing? This is the subject of cosmology; the study of the Universe, and this book provides a perfect i …

General relativity and quantum mechanics have become the two central pillars of theoretical physics. Moreover, general relativity has important applications in astrophysics and high-energy particle p …

Bringing the material up to date, Black Holes, Wormholes and Time Machines, Second Edition captures the new ideas and discoveries made in physics since the publication of the best-selling first editi …

Reflecting the results of twenty years; experience in the field of multipurpose flights, this monograph includes the complex routes of the trajectories of a number of bodies (e.g., space vehicles, co …

The Restless Universe: Applications of Gravitational N-Body Dynamics to Planetary Stellar and Galactic Systems stimulates the cross-fertilization of ideas, methods, and applications among the differe …

Offering a series of well-defined problems supplemented by solutions, Exercises in Practical Astronomy: Using Photographs presents meaningful practical work in elementary astronomy and astrophysics. …

The Photographic Atlas of the Stars contains 50, high-quality full color photographs of the entire night sky of the northern and southern hemispheres. Each plate is accompanied by a star map of the i …

The growth of cosmology into a precision science represents one of the most remarkable stories of the past century. Much has been written chronicling this development, but rarely has any of it f …

Previously published as A History of the Universe in 21 Stars. ”REVISED AND UPDATED ___ ”A wonderful book about the science, history and mythology of 21 stars (and 3 impostors).” Dr David Whitehou …