Every planet (excepting Pluto) and nearly every other significant body
in our solar system has been or soon will be landed on, crashed into,
flown by, or otherwise prodded and peered at, mainly by unmanned
missions that attract less than their share of public attention. Here,
Peter Bond provides an overview of key twentieth century unmanned
missions, telling the story of the mission planners and engineers who,
working mostly in the background, made these unprecedented achievements
in scientific exploration possible. The book illustrates in close detail
the human feelings that animated the intense rivalries between the
Soviet Union and the United States, and most recently the difficulties
that arose in collaborations between NASA and ESA on the Rosetta and
Halley's Comet missions.