Heaven beyond

Heaven beyond

Jupiter, as imaged by the Juno spacecraft • NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill

Originally published 19 December 2004

Galileo, OrbView‑2, Ter­ra, Aqua, Lunar Orbiter, Mag­el­lan, Mariner 10, Yohkoh, SOHO, TRACE, Mars Pathfind­er Lan­der, Mars Glob­al Sur­vey­or, Mars Odyssey, Viking Orbiter, Viking Lan­der, NEAR, Cassi­ni, Voy­ager 1 and 2.

These are the Niña, Pin­ta and San­ta Maria of plan­e­tary explo­ration, tiny machines, small­er than Colum­bus’s craft, hurled into space with cam­eras and remote sen­sors. None has returned home. Their equiv­a­lent of Aztec and Incan gold was beamed back to Earth as radio streams of bina­ry data. A few have left the solar sys­tem and now drift into the space between the stars.

And where is this “Aztec and Incan gold,” the glo­ri­ous booty from new worlds? It is stored in NASA com­put­ers. Much of it is avail­able on the inter­net, if you know where to look for it. Most of it would mean exact­ly noth­ing to most of us.

But let me make a rec­om­men­da­tion. If you buy one cof­fee table book this year, let it be Michael Ben­son’s Beyond: Visions of the Inter­plan­e­tary Probes. Ben­son has searched space-probe archives for the most spec­tac­u­lar pho­tographs of the objects in our solar sys­tem, includ­ing the Sun, Moon, and Earth. Here is trea­sure in abun­dance, beau­ty and knowl­edge fit for a king or
queen.

And not just knowl­edge of bar­ren plan­ets and cratered moons. Self-knowl­edge too. We can­not know our­selves unless we know the uni­verse that gave us birth. Niet­zsche said that humans are a rope stretched between the ani­mals and the gods — a rope across an abyss. The robot­ic plan­e­tary explor­ers are rope.

We are the crea­tures who invent­ed these mag­nif­i­cent machines, who chose to invest out wealth in ships that would return not with sil­ver and gold, but with pure knowl­edge. Knowl­edge of the plan­ets. Knowl­edge of ourselves.

The great bulk of what we paid for nev­er even made it into space. Pro­pel­lant, boost­er shells, dis­card­ed sec­ond and third stage rock­ets, and tons and tons of fuel and hard­ware goes nowhere. Its only pur­pose is to lift a pack­age of cam­eras and sen­sors out of Earth­’s grav­i­ty. And with­out Earth­bound com­put­ers, radio receiv­ing sta­tions, and con­trol rooms the plan­e­tary robots would be deaf and blind.

I’ve seen some of Ben­son’s pho­tographs before, in sci­ence pub­li­ca­tions, on the web­sites for the indi­vid­ual projects, or one-by-one in the media. But to see them all togeth­er, repro­duced in high qual­i­ty, dig­i­tal­ly enhanced, on glossy paper, is a mind-blow­ing experience.

Among my favorite images: North­ern Cana­da and Green­land from high above the North Pole; a four-page fold-out spread of the cratered lunar sur­face, bat­tered, as was the ear­ly Earth, into pits and dust; solar storms as seen in x‑rays and ultra­vi­o­let light; defrost­ing dunes on Mars; aster­oid Ida and its tiny moon Dactyl; Jupiter’s moons Io and Europa against the back­drop of the plan­et’s psy­che­del­ic sur­face; a vol­cano erupt­ing on Io; pop-art images of Sat­urn’s rings; the dual cres­cents of blue Nep­tune and its moon Triton.

But why am I mak­ing choic­es? There is not an image in this book that is not worth savoring.

This morn­ing, the lat­est issue of Sci­ence arrived, with a spe­cial sec­tion on the Mars Oppor­tu­ni­ty rover, replete with pho­tographs of Oppor­tu­ni­ty’s tracks in the Mar­t­ian dust, and the round depres­sions in Mar­t­ian rocks where Oppor­tu­ni­ty has tast­ed minerals.

This robot, like the ones fea­tured in Ben­son’s book, is an exten­sion of our own sens­es — see­ing, sniff­ing, tast­ing, touch­ing an alien landscape.

Eleven arti­cles in Sci­ence cov­er every aspect of the Mar­t­ian sur­face and atmos­phere. Sev­er­al hun­dred authors alto­geth­er; the names read like a roll call at the Unit­ed Nations: Yen, Klin­gel­hofer, d’Us­ton, Calvin, Wdowiak, Arne­son, Guin­ness, Rodi­onov, Chu, Anwar, Ghosh, Spanovich, Smith, etc. No way to tell the reli­gion or pol­i­tics of the authors; plan­e­tary explo­ration is an activ­i­ty that tran­scends the squab­bles that frag­ment our own tiny planet.

The pho­tographs in Beyond take us beyond our squab­bles, show us a uni­verse ruled by nat­ur­al law, teach us just how frag­ile and pre­cious life is.

On the last page of the book, Ben­son quotes a sen­tence from a NASA press release about an ear­li­er Mars rover: “The health and sta­tus of the rover is unknown, but it is prob­a­bly cir­cling the vicin­i­ty of the lan­der, attempt­ing to com­mu­ni­cate with it.”

An extra­or­di­nary sen­tence. That lit­tle rover on the life­less plan­et, an arti­fact of our quest for reli­able knowl­edge of the world, try­ing its best to phone home.

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