John V. Evans (born 5 July 1933) is a British-Americanradio astronomer born in Manchester, England. He obtained his PhD at theUniversity of Manchester, and has been a professor at theLincoln Laboratory of theMassachusetts Institute of Technology since 1960.^[1]

In 1975, Evans received the Appleton Prize.^[1]

Evans showed how long-period lunar echo fading could be used to measure ionospheric electron density. William Smith used Long Michelson interferometer observations of sources to do the same. He also demonstrated that lunar scattering was limb-darkened. With G. N. Taylor, he bounced radar echoes off Venus in September 1959. He has performed radar studies ofthe Moon,Venus, etc. He also worked on detectingSputnik 1 with theJodrell Bank. He co-authored the classic textbookRadar Astronomy with T. Hagfors.^[2]

In 1984, Evans was elected as a member of theNational Academy of Engineering for the development of remote sensing technology which has given us a new understanding of the earth's upper atmosphere and the atmospheres of other planets.

• Biographical Dictionary of Great Astronomers

• 1933 births
• Living people
• 20th-century British astronomers
• 20th-century American astronomers
• Massachusetts Institute of Technology faculty
• MIT Lincoln Laboratory people
• Alumni of the University of Manchester

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