Reconnaissance of the Nearer Planets

A Survey of Planetary Problems in the Space Age

• Author(s): G. De Vaucouleurs,
• Publisher: Air Force Office of Scientific Research, Directorate of Research Analyses, United States Air Force
• Pages: 141
• Language: en

Description:... This discussion is divided into two parts: the first part is a summary of the best present information of the planets Mercury, Venus, and Mars, gained almost entirely from ground-based observatories. The second part outlines how these methods could be extended to observations from balloon observatories, and especially from space probes and orbiters in the immediate vicinity of the planets.