Pioneer Program

The American Pioneer program of unmanned space missions was designed for planetary exploration. There were a number of such missions in the program, but the most notable were Pioneer 10 and Pioneer 11, which explored the outer planets and left the solar system. Both carry a golden plaque (see Pioneer plaque), depicting a man and a woman and information about the origin and the creators of the probes, should any extraterrestrials find them someday. See also: Timeline of Planetary Exploration, Able space probes External links: *

 

<< PreviousWord BrowserNext >>
psilanthropism
pendulum clock
programmable logic controller
proprietary software
peter david
plenum
potential difference
pretoria
peano axioms
procyon
prisoner of war
privacy
proton proton chain reaction
plankton
pi day
the excellent prismatic spray
positivism
pauli effect
pat mills
pearl index
presbyterian church usa
pia colada
packbits
pub rock (australia)
phonation
principal ideal domain
p 38 lightning
prayer
punjabi language
power associativity
pierre de coubertin
polish notation
peyote
primary education
preprocessing
piedmont
palestinian views of the peace process
product of rings
posthumanism
parameter
procedure
paavo nurmi
purple heart
polyatomic ion