From: GBurch1@aol.com
Date: Sun Jun 06 1999 - 10:54:59 MDT
http://chicagotribune.com/version1/article/0,1575,SAV-9906040314,00.html
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NASA CHIEF DAZES SOME ASTRONOMERS
IDEA FLOATED FOR TINY SPACESHIPS WITH DNA
By Peter Kendall
Tribune Staff Writer
June 04, 1999
Variously hissed and applauded, NASA administrator Daniel Goldin told
astrophysicists concluding a conference in Chicago Thursday that the
future of space exploration belongs not to physics, but to biology.
Delivering what was billed as a major address articulating the "vision"
for NASA's future, Goldin sounded like Jules Verne as he told members of
the American Astronomical Society that science must hybridize machines
with living things to build better spaceships, telescopes and computers.
He spoke of Coke-can sized spaceships, programmed with DNA, that evolve
into thinking machines as they ride on asteroids, feeding off them like
ticks.
He talked of using the gravity of the sun to focus light from faraway
worlds to make a "biomemetic"--or life-mimicking--telescope so powerful
it could spy forest fires on planets in other solar systems.
The astronomers, at times downright hostile in their reception, showed
that even they can have a limited appetite for pie in the sky.
"He's talking to the wrong audience," said Jeff Hester, an astronomer
from Arizona State University. "We were told we were a bunch of
troglodytes, and it didn't sit well."
Goldin, who has led NASA since 1992, is widely credited with rescuing
the agency with his "faster, better, cheaper" approach to space science.
NASA's Mars Pathfinder mission, for example, cost one-tenth what the
1976 Mars Viking mission cost and was completed in one-third the time.
But he is also criticized for being something of a grandstander and for
paying too much attention to politics.
Amid the critics, many others in attendance found the broad strokes of
Thursday's address refreshing.
"You treat his speeches as you would read the Bible; they are parables,
not meant to be taken literally," said Michael Turner, a University of
Chicago cosmologist. "What he was saying is that it is OK to dream, and
that is good."
Goldin's most fanciful dream was of a small, parasitic spaceship
launched onto a passing asteroid.
"Aboard the asteroid, the spacecraft will use a DNA-based biomemetic
system as a blueprint to evolve, adapt and grow into a more complex
exploring and thinking system," Goldin said.
The spaceship, Goldin said, would feed off the asteroid like a parasite,
using the rock's carbon and iron to build a nervous
system and organs for communications.
When the asteroid neared its destination--another star--the spaceship
would leap off its space rock "host" and start gathering astronomical
data for researchers back on Earth.
"Such a spacecraft sounds like an ambitious dream," Goldin said, "but it
could be possible if we effectively utilize hybrid technologies."
Goldin also told the astronomers, some of whom have been dreaming up
ways to extend the life of the Hubble Space Telescope beyond 2010, to
"let it go."
The Hubble, a near debacle because of early technical glitches, has
become an astonishingly powerful and beloved tool. Many at the
convention have made their careers on studying the stream of images that
reveal space secrets.
"Too many of you are hugging the Hubble Space Telescope," Goldin
admonished.
After becoming boss at NASA, Goldin began pushing ahead with the Next
Generation Space Telescope, an instrument that will be far more powerful
than Hubble, though it will be built at a fraction of the cost.
"Given the budget constraints science and technology face, we need to be
willing to let go of old observatories when new technologies are ready
for development," Goldin said.
Space science has become a race against the clock, Goldin said, because
the aging of the Baby Boomers will put even more pressure on Congress to
cut "discretionary" funding like NASA's.
"I can tell you," Goldin said, "that NASA cannot rely on an expanding
budget to pay for brute-force technological solutions to these
scientific challenges."
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