This Day In Astro History

Pioneer 10
Pioneer 10

April 25

1983 - Pioneer 10 travels beyond Pluto's orbit. Pluto's irregular orbit meant it was closer to the Sun than Neptune at the time. The last signal received from Pioneer 10 was January 23, 2003.

maple leafPhillip Peebles1935 - Birthday, Phillip James E. Peebles born in Winnipeg, Manitoba he graduated from the University of Manitoba in 1958.. He became a physicist and worked and taught at Princeton University for many years, where he is currently Albert Einstein professor of science (1984 - ). He is considered by some to be probably the single most important cosmologist of the last 30 years. He is a recipient of numerous honorary degrees and awards, including the A.C. Morrison award, the Eddington Medal, the Heineman Prize and the 1995 C.W. Bruce medal of the Astronomical Society of the Pacific. He is a member of numerous scientific societies.
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It is my conclusion that human evolution and the motions of matter in space are intrinsically linked. The observation and understanding of the complexity of biological history on Earth cannot be complete without the tandem observation and understanding of a dynamic greater cosmos. - SpaceGene