Recent advancements in observational techniques have led to the capture of high-resolution images of black hole shadows, which are challenging the completeness of Einstein’s general theory of ...

Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. Changes in global air quality are determined by the release of key chemical compounds ...

A combination of standard and new observational techniques has been used to detect the magnetic field of a molecular cloud — a region of the interstellar medium that collapses during star formation.