There are a number of lessons to be learned from volume 2 of the recent Apollo-Soyuz Test Project (ASTP) Report (NASA SP-412,1979). Among them, two are outstanding. For one, the value of human observation in space science should not be underestimated. Another is that the quest for excellence in U.S. space efforts is uncompromising at all levels. The ASTP Report, Volume 2, is a tangible product of the important segment of the joint Apollo-Soyuz mission to utilize the special capabilities of trained astronaut observers. The objectives were to observe and photograph specific features, processes, and phenomena on the earth, in real time, for later study. The report contains in-depth analyses of earth-orbital photographs in the areas of geology, desert studies, oceanography, hydrology, and meteorology. The volume is extensive and thorough.