His death was confirmed by his sons, Robert and Graham.
Dr. Billingham, an Englishman who earned a medical degree at Oxford and
helped design spacesuits for astronauts in the 1960s, never found the
evidence he was looking for. But he did help establish the validity of
the quest.
“We sail into the future, just as Columbus did on this day 500 years
ago,” Dr. Billingham said on Oct. 12, 1992, when after two decades of
planning and maneuvering NASA formally began its search for
extraterrestrial intelligence, known by the acronym SETI. “We accept the
challenge of searching for a new world.”
The effort, which Dr. Billingham led as chief of the life sciences
division at NASA’s Ames Research Center in California, involved using
huge radio telescopes to search for radio signals — either deliberate
intergalactic flares or incidental noise — emitted by other
technologically advanced civilizations that might be billions of years
old and billions of light-years away.
“The whole picture is that we are the newcomers on the block, that
they’re out there, other civilizations that are much older than we are,”
Frank Drake, a radio astronomer who in 1960 started seeking signals
from beyond the solar system, said in an interview. “Anybody we find
would probably be way ahead of us in longevity and probably in
sophistication.”
Yet a year after NASA began the project, SETI lost its federal financing
amid Congressional assertions that it was a waste of taxpayer money —
“a great Martian chase” in the words of one critic, Senator Richard H.
Bryan, a Nevada Democrat.
Dr. Billingham retired not long after, but neither he nor SETI was finished.
Operating as the nonprofit SETI Institute,
based in Mountain View, Calif., Dr. Billingham and a team of scientists
cobbled together financing from universities and high-tech billionaires
to keep the effort going. The Allen Telescopic Array,
jointly owned by the institute and the University of California,
Berkeley, is named for Paul G. Allen, a co-founder of Microsoft, who
gave $25 million to the cause.
Although the federal government no longer pays SETI scientists to search
for intergalactic radio signals, federal grants have helped pay for
some of the SETI equipment used in recent years. Government emphasis has
shifted toward another endeavor Dr. Billingham supported, which is also
pursued by scientists at the institute: the rapidly expanding field of
astrobiology, which includes searching for extraterrestrial life at the
most microbial level, not just forms that might transmit radio signals.
Dr. Billingham first learned of astrobiology, then called exobiology, in
1968, through the work of the astronomer and author Carl Sagan and
others.
“It changed my whole life,” he once wrote.
Three years later, he recruited Barney Oliver,
the research chief of Hewlett-Packard, to host a symposium at which
they and others sketched out a plan for using a $10 billion array of
giant radio telescopes to search for extraterrestrials. They called it
Project Cyclops.
“We are almost certainly not the first intelligent species to undertake
the search,” they wrote in a proposal that spanned more than 200 pages.
“The first races to do so undoubtedly followed their listening phase
with long transmission epochs, and so have later races to enter the
search. Their perseverance will be our greatest asset in our beginning
listening phase.”
Dr. Billingham was born on March 18, 1930, in Worcester, England. He
completed his medical studies at Oxford in 1954 and later spent six
years as a medical officer in the Royal Air Force. He joined NASA in
1963, becoming chief of its environmental physiology branch later that
year at the Johnson Space Center in Houston. He moved to the Ames
Research Center in 1965 and spent the next several years in NASA’s
biotechnology divisions while he built support for SETI.
In addition to his sons, he is survived by four grandchildren. His wife, the former Margaret Macpherson, also a physician, died in 2009.
SETI was not formally incorporated into Dr. Billingham’s official job
title at NASA until March 1991, when he became chief of the space
agency’s Office of the Search for Extraterrestrial Intelligence. When
financing was eliminated three years later, he became a senior scientist
at the SETI Institute.
One of Dr. Billingham’s concerns was how to respond to a radio signal
from space. To answer the question, he helped draft the “Declaration of
Principles Concerning Activities Following the Detection of
Extraterrestrial Intelligence.” The document allowed that a proper response would depend on the signal received. Only so much advance planning is possible.
“A lot of people think this is silly, but we need to give a lot of
thought to a reply,” Dr. Billingham said in 1992. “It is not a question
just for scientists and engineers. Already we agree on one rule: Don’t
reply unless you have undertaken extensive international consultation.”
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