[meteorite-list] NP Article, 07-1969 Moon Rocks and Meteorites
From: MARK BOSTICK <thebigcollector_at_meteoritecentral.com>
Date: Thu Apr 22 10:23:46 2004 Message-ID: <OE251QO05Ryn2HiVQ4h0000134e_at_hotmail.com> Title: The Post Crescent City: Appleton, Wi Date: Sunday, July 13, 1969 Page: A6 More Precious Than Diamonds Rocks Will Answer Moon's Secrets By Alton Blakeslee Eleven days from now, an extraordinary shipment is due from the moon. It will weigh 50 to 60 pounds and be vacuum-packed inside two metal boxes. If a price tage could be placed upon it, the bidding might start at 100 times the value of the same amount of diamonds. It will be a collection of rocks and dust, hand-picked from the lonely surface of the moon by two American astronauts, the first men on the moon. They may be rather ordinary rocks or exotic rocks: in either case they will be priceless because they will be the first specimens known to have come from the moon, or any other known place in the universe. Several hundred impatient scientists in 13 nations will be waiting to interrogate these rocks, pouncing on them for what they really represent - pages out of the history of the mysterious challenging moon. Quarantine Period "Are you dangerous?" will be the first question. Do these rocks carry germs, viruses, peculiar life forms that might sweep in a bizarre epidemic among people on earth? They will be quarantined, isolated, for at least three weeks while this worry is tested out. But then the questions from scientists will flurry. "How were you born? Tell, tell - is the moon you came from a sister, or a daughter, or a captive wive of this planet earth? Is the moon's deep interior hot or cold? Did a volcano spew you out from inside the moon? Did a meteorite flashing in from space a 7 to 45 miles per second, rip you from the bowels of the moon, or in its hellish, cataclysmic explosion create you from molten moon material that then formed into a rock? Tell, tell, tell! This first sample of the moon rock is bound to tell something, if perhaps only a tease a bit longer the advocates of various theories as to how the moon and earth began, how they are related. Perhaps they will put some theories to death. Is the moon the earth's sister? By this theory, earth and moon began as great clouds of space dust, which condensed under gravitational pressure to form planetary bodies wheeling around the sun, about 4 1/2 billion years ago. The rocks may answer. Is the moon the earth's daughter? When one great blod of condensing space dust was congealing into more solid matter, was the moon pulled out to become a satellite of the earth? Or - in a theory pretty well discarded - was the moon rippd out of the Pacific Ocean basin eos ago when the earth was spinning faster than now? The rocks may tell. Or was the moon a wandering planet which happened to approach too close to the earth and sun, thus becoming a captive wife of the earth? Does the moon have a molten core at its center - as the earth does - or was it formed "cool", never alive with hot fires from radioactivity or other causes? Were the moon's tremendous craters and so-called "seas" formed by volcanic action, or by the brutal bombardment of great and small meteorites? Unlike the earth, the moon has no cushioning atmosphere to incinerate chunks of stone and metal homing in from outer space. Does the moon have life on or under its surface, even if it be in the form of suspended animation, like a virus that can be freeze-dried, then reactivated on contact with water? Did life on earth begin from curious spores floating in from somewhere in space, as one old theory holds, and if so, could there not be similar spores on the moon? Does the moon have the beginnings of organic materials out of which life might spontaneously spring? Some specialists think the moon's seas once were really seas, but that the water long ago evaporated. Dr. Harold Urey, a Nobel laurete and moon specialists, proposes that once, when the moon and earth were much closer together, a great body from space hit the earth, splashing a great geyser of water onto the moon, carrying primitive life organisms from the earth to the moon. Dusty History Other scientists think the moon's dusty surface may contain a history of the moon, sun and space dating back billions of years. The moon's surface could be like a dusty table that has never had a swipe from a housewife's cloth, never disturbed by wind or rain, hence supplying a record of things past, just as layers of rocks and sediments and imbedded forssil supply a history of the earth. The moon could be a facsimile of how the earth looks and was billions of years ago, before erosion, volcanic activity, mountain building - and man's aterations - changed its first face. Major features of the moon have not changed since Galileo first peered at the moon with his primitive telescope in 1610. Major actions altering the moon's face, whether from volcanoes or the imoact of huge meteorites, or both, appear to be over. Soviet and American observers believe they have detected signs of volcanic activity, in the form of curious red-colored blotches that might represent the venting of volcanic ash or gases, near the crater Arisharchus. But was it that? Literally tons of meteorites fall on earth each year, mostly in the form of tiny particles or shooting star that turn to and drift down as dust. Some are believed to be bits of moon matter, shot free of the moon's weak gravity when a meteor thundered in and exploded and created a hole. But meteorite specialists cannot say for sure which recovered meteorites came from the moon. Small Meteorites The moon is also being steadily bombarded by small meteorites, churning its face into dust. Some rocks - perhaps one to be returned in Apollo 11 - might have originated halfway around the moon from where Neil Armstrong and Edwin Aldrin find them, The impact of a meteor could have sent them flying until the moon's gravity brought them down to the surface again. Some puzzles of the moon have been partially resolved by the probings of Surveyor spacecraft that landed on the moon, by Rangers that crashed into the moon, by Orbiter spacecraft which flew around the moon, also taking thousands of pictures. The Surveyors, landing heavily but no sinking, showed that the moon's dust is not so think that Apoll 11 and its astronauts will sink fatally beneath the surface. The moon's texture seems indeed to be like that of the earth's in composition and consistency. Various pictures yielded evidence - at least to theorists looking for it - that some moon features were born of volcanies, others created by meteors. The handful of moon rocks may go far in supplying answers to all there questions. So vital is winning the yield of just one rock that Armstrong's first task when he sets foot on the moon is to pick up one rock and stick it in his pocket, in case some emergency forces a quick halt in his stay to the moon. Armstrong and Aldrin have been honed in geology, taking about 150 hours of classroon instruction, plus numerous field trips, so they can recognize the most valuable, informative types of rocks. And they will set up other experiments on the moon to broaden scientific knowledge about the moon, earth and sun. They will set up a seismometer to radio back whether any moonquakes occur and if so whether they were caused by volcanoes or by a blow from a meteorites. Window Shade For another, they will set up a special alumnized "window shade" which for more than two hours will collect atomic particles raining from the sun in a steady solar wind. They'll bring in back for analysis of what kinds of particles, from atomic hearts known as protons to perhaps atoms of iron, the sun keeps pouring into space. They will leave behind a special reflector to send back lasor beams pulsed out from the earth. These narrow beams of light, travelling at 186,000 miles per second, can measure the distance from earth to moon within six inches. Received on Thu 06 Mar 2003 01:39:02 PM PST |
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