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Fig. 1.11
The Tower of
Babel by Maurits Escher
(1928)
Pioneer 10 was launched in 1972. It is now one of the few most remote man-
made objects. Communication was lost on January 23, 2003 when it was 80 AU
3
from the Sun. It was 12 billion kilometers or 745.6 million miles away. Pioneer
10 was headed towards the constellation of Taurus (The Bull). It will take Pioneer
over 2 million years to pass by one of the stars in the constellation. Pioneer 11
was launched in 1973. It is headed toward the constellation of Aquila (The Eagle),
Northwest of the constellation of Sagittarius. Pioneer 11 may pass near one of the
stars in the constellation in about 4 million years.
According to “
First to Jupiter, Saturn, and Beyond
” (Fimmel et al.
1980
), a group
of science correspondents from the national press were invited to see the spacecraft
3
Astronomical Unit: one AU is the distance between the Earth and the Sun, which is about
150 million kilometers (93,000 million miles).
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