April 2018 • Issue 152


On March 24, 1993, in the midst of a photographic search for near-Earth objects at the fabled Palomar Observatory, Drs. Carolyn and Eugene Shoemaker and Dr. David Levy acquired an image in the vicinity of planet Jupiter using surplus film. This image surprised the observers when they first examined it. Expecting to find yet another […]  (read more…)

New and Noteworthy

Wiley, 2017, 402 pp., Hardcover, $199.95 Geochronology techniques enable the study of geological evolution and environmental change over time. This volume integrates two aspects of geochronology:  one based on classical methods of orientation and spatial patterns, and the other on ratios of radioactive isotopes and their decay products. The chapters illustrate how material science […]  (read more…)
Springer, 2017, 276 pp., Paperback, $34.99. In these days of computers and CCD cameras, visual comet observers can still contribute scientifically useful data with the help of this handy reference for use in the field. Comets are one of the principal areas for productive pro-amateur collaboration in astronomy, but finding comets requires a different approach than […]  (read more…)