Pioneer 6, 7, 8, And 9
Pioneer 6, 7, 8, and 9 were space probes in the Pioneer program. Together, they formed a series of solar-orbiting, spin-stabilized, solar-cell and battery-powered satellites designed to obtain measurements on a continuing basis of interplanetary phenomena from widely separated points in space. They were also known as Pioneer A, B, C, and D. The fifth (Pioneer E) was lost in a launch accident.
Read more about Pioneer 6, 7, 8, And 9: Purpose, Vehicle Description, Communications, Time Line and Current Status
Famous quotes containing the word pioneer:
“The poet is no tender slip of fairy stock, who requires peculiar institutions and edicts for his defense, but the toughest son of earth and of Heaven, and by his greater strength and endurance his fainting companions will recognize the God in him. It is the worshipers of beauty, after all, who have done the real pioneer work of the world.”
—Henry David Thoreau (1817–1862)