★ 7.2
★ 8.5
★ 7.1
★ 6.7
★ 0.0
★ 7.0
★ 6.5
★ 6.6
★ 7.3
★ 8.0
Thirty distinguished astronomers are visited at their observatories throughout the world in this comprehensive report of astronomical theories, research, and discoveries.
