Fourteen years ago, NASA's orbiting observatory, the
Hubble Space Telescope, began wowing us all with its celestial
snapshots of exploding stars, colliding galaxies, and nebulous
clouds of solar system nurseries. The real stunner, though, came
in January 1996, when a team of astronomers unveiled their space
scope masterpiece: the Hubble Deep Field. During the course of a
ten-day exposure, particles of light traveling at 186,000 miles
per second—and streaming our way for the past thirteen
billion years—were compiled into a remarkable image of
some of the most distant objects ever observed. Over fifteen
hundred galaxies, many dating back to within one billion years
of the Big Bang, were revealed in a patch of sky the size of a
grain of sand held at arm's length.
This year Hubble managed to peer back even
further—to perhaps as early as three hundred million years
post Big Bang, which is when the very first galaxies began to
form and nearly nine billion years before Earth itself coalesced
into existence. Called the Hubble Ultra Deep Field
(UDF), this dazzling photo features an estimated ten thousand
galaxies of various colors and shapes, at various stages of
evolutionary development. The image was acquired during the
course of four hundred Hubble orbits around Earth over a period
of three months, totaling eight hundred separate exposures.
Photons of light from the most distant objects seen in the image
trickled in at a rate of one photon per minute, compared to
millions of particles per minute from galaxies closer by. Thus,
to examine the entire sky with the same resolution, astronomers
say, would take about one million years.
Here at WIE we've been rather awestruck by
all of this. So we decided to consult some acclaimed
astrophysicists and cosmologists to get their professional
insights. Judging by their responses, it seems we aren't the
only ones in awe . . .
Ann Druyan
“Science lifts the curtain on a tiny piece of night
and finds ten thousand galaxies hidden there. Each one a
community of perhaps a hundred billion suns; each sun a
potential home star to, say, a dozen worlds. How many stories,
how many ways of being in the universe are contained therein?
All residing in what, to us, had been just a little patch of
empty sky. Seeing the light from these jewels shine forth across
the great ocean of space and time, I marvel at our science and
ache for a political and spiritual philosophy reflective of its
insights.”
Ann Druyan was Carl Sagan's cowriter for twenty years.
She is CEO of Cosmos Studios, which will launch into space later
this year Cosmos I, the world's first solar sailing
craft.
James N. Gardner
“In contemplating the image revealed by the Hubble
Ultra Deep Field, I am reminded of the sense of wonder felt by
Antoni van Leeuwenhoek, the father of observational
microbiology, when he first peered through a primitive
microscope and glimpsed vast hordes of 'wee beasties' populating
drops of pond water and human spittle. The hidden living
firmament that so astonished the Dutch scientist (bacteria,
protists, rotifers, nematodes, and much more) turned out to be
the very foundation of the global ecosystem—the
microscopic cells of Gaia's flesh and blood. So, too, the
unsuspected celestial grandeur revealed by this image may
someday be appreciated as a poignant baby photo—the faint
image of a moment, unfathomably distant in time and space, when
the vast universe began an utterly mysterious process of coming
to life.”
James N. Gardner is a practicing lawyer, cosmologist, and
former Oregon state senator. He is the author of
Biocosm.
Neil deGrasse Tyson
“For me, what is most striking about the UDF is the
richness of morphology revealed in even the tiniest of galaxies.
The photogenic spirals, kindred forms to our own Milky Way, show
the characteristic central bulges and the knots of freshly made
stars that dot the spiral arms. Each of these galaxies, however
small it appears in the image, is its own collection of hundreds
of billions of stars.
“Let there be no misunderstanding: many ground-based
images exist of the seemingly countless galaxies in the outer
universe, but in all cases the galaxies appear as
undistinguished smudges. By these, I am captured intellectually,
but not emotionally. Only with sharp images like the UDF am I
viscerally reminded that there are other worlds out there.
Billions and billions of them. And I wonder: on planets around
stars in the galaxies of the Ultra Deep Field, are there
life-forms that are contemplating the universe the way we are?
Or are they not paying attention because they are just looking
for shelter, food, and sex, as does most life on
Earth?”
Neil deGrasse Tyson is an astrophysicist, author, and
director of New York's Hayden Planetarium, where he also
teaches.
Brian Swimme
“What strikes me about the UDF is that we're at
this incredible moment of understanding the depths of our
being—the depths of our human being but also the
depths of our cosmic being. You just get a sense of this vast
cosmic odyssey, and we're right in the middle of it. Humans have
been around for over a hundred thousand years, and we simply
didn't know about this until recently.
It's amazing.
“One of the interesting differences between this and
the original deep field images is that there's more variety
of galaxies—it's more chaotic. It reminds me
of the way in which you'll have an explosion of animal forms at
the birth of a species—an explosion of diversity,
this incredible chaotic explosion of possibility—and then
the universe sort of winnows out the more exotic shapes and
enfolds them into forms that are more enduring. Diversity is a
great way in which the universe explores its future.”
Brian Swimme, founder of the Epic of Evolution Society,
is currently professor of cosmology at the California Institute of Integral Studies.