Book 2 follows a science survey into the Third Quadrant, a desolate wasteland left by ancient asteroids. Scenes of friends and family back on the crew’s home planets are woven through the story. New characters join with major and minor characters we met in the first book to crew the expedition. They explore a desert planet and intervene in the shunning of a young cave dweller, who joins them on the ship. While surveying an unexpected gas giant, they lose a crew member to its toxic gas cloud. The expedition crew moves on, not knowing he survived, and we follow his healing and acceptance into the planet’s forest culture. The third planet the crew finds is too massive to approach, but the debris orbiting it proves to hold important clues. The different threads of narrative in the book come together as a shift in the currents of time and space, leaving people with very different memories of shared reality. The crew return home, but there are several surprises on the way. They find their lost crew member again, mourning for the love he left behind. Back on their home planets, there is still one more mystery to resolve.

Problems associated with a general scarcity of observations of the southern sky have persisted since the present era of galactic research began some sixty years ago. In his 1930 Halley Lecture A. S. Eddington commented on the observational support given to J. H. Oort's theory of galactic rotation by the stellar radial velocities measured by Plaskett o 0 and Pearce: " . . . out of 250 stars only 4 were between 193 and 343 0 galactic longitude [=£1: 225

Enhanced sensitivity radio telescopes are producing dramatic results. An international conference was held in Jodrell Bank to take stock of these advances. This timely volume presents the review articles presented by a host of world experts who gathered at this meeting. We are shown how high sensitivity is advancing our understanding in radio spectral line analysis, radio continuum observations of galaxies, cosmology, pulsars, and radio emission from stars; what new and enhanced instruments are now available and those planned for the future. This volume provides graduate students and researchers with an up-to-date and wide-ranging review of the new and future research possible with high-sensitivity radio telescopes.

At head of title: International Astronomical Union. Union astronomique internationale.