A search is in progress for copies of Copernicus' 1543 publication "On the Revolutions of the Celestial Spheres." The history of each copy (215 found thus far) is being analyzed to offer insights into the past. For example, the futility of the Inquisition's attempt to censor the book was chronicled. (Author/JN)

Provides a review of the great discoveries, theoretical concepts and development of physics in the 20th century. The growth and significance of diverse fields such as quantum theory, relativity theory, atomic physics, molecular physics, the physics of the solid state, nuclear physics, astrophysics, plasma physics, and particle physics are…

This article focuses on discoveries in astronomy during the past 20 years using a wide range of observing techniques. The future is seen as a time when astronomers will learn more about the distribution of mass in the universe, the physics of energetic sources, and the intricate interconnections of astrophysical processes. (Author/SA)

Outlines the history of space exploration. Proposes that the United States should join the Soviet Union in space efforts with beneficial terrestrial applications. Gives examples of suitable areas of research. Suggests international centers for space research based in developing countries. Argues for greater support of the Global Atmospheric…

The history of the sciences in America in 1880 is described as a time of considerable vitality in the disciplines of earth and life sciences. The natural scientific resources of the American continent are credited as contributing to the vitality. Pluralism of institutional support is discussed with a historical perspective. (SA)