---
title: "27 Could Quotes By Seth Shostak"
description: "27 Could quotes by Seth Shostak. Plus more from Seth Shostak and more Could sayings from other authors."
image: "https://sms4smile.com/quotes/i/7d3/seth-shostak-2047_19th-century_in-the-19th-century-if-you-had-a-basemen_1995392.png"
---

> [In the 19th century, if you had a basement lab, you could make major scientific discoveries in your own home. Right? Because…](https://sms4smile.com/quotes/seth-shostak/in-the-19th-century-if-you-had-a-basement-lab-you-could-make-major/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/7d3/seth-shostak-2047_19th-century_in-the-19th-century-if-you-had-a-basemen_1995392.png)

> [We can no better imagine what will be happening on the moon 500 years from now than Columbus could imagine contemporary Manhattan.…](https://sms4smile.com/quotes/seth-shostak/we-can-no-better-imagine-what-will-be-happening-on-the-moon-500-years/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/9b6/seth-shostak-2047_better_we-can-no-better-imagine-what-will-be-ha_531170.jpg)

> [We can never prove that we're alone in the universe. But the Allen Telescope Array could prove that we're not.](https://sms4smile.com/quotes/seth-shostak/we-can-never-prove-that-we-re-alone-in-the-universe-but-the-allen/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/0be/seth-shostak-2047_allen_we-can-never-prove-that-we-re-alone-in-t_1711709.png)

> [Virtually any pointed edifice is considered a candidate for alien engineering. After all, how could the Egyptians or Mayans have possibly stacked…](https://sms4smile.com/quotes/seth-shostak/virtually-any-pointed-edifice-is-considered-a-candidate-for-alien/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/530/seth-shostak-2047_after_virtually-any-pointed-edifice-is-conside_851704.png)

> [Admittedly, it would take industrial-grade chutzpah and a massive dose of malevolence for anyone to bulldoze the spot where Neil Armstrong stepped…](https://sms4smile.com/quotes/seth-shostak/admittedly-it-would-take-industrial-grade-chutzpah-and-a-massive-dose/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/eae/seth-shostak-2047_admittedly_admittedly-it-would-take-industrial-grad_3097067.png)

> [Give consideration to the fact that alien astronomers could have scrutinized Earth for more than 4 billion years without detecting any radio…](https://sms4smile.com/quotes/seth-shostak/give-consideration-to-the-fact-that-alien-astronomers-could-have/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/e1f/seth-shostak-2047_alien_give-consideration-to-the-fact-that-alie_49116.png)

> [The era during which only governments could put hardware on the Moon is coming to an end. There are 26 private teams…](https://sms4smile.com/quotes/seth-shostak/the-era-during-which-only-governments-could-put-hardware-on-the-moon/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/e09/seth-shostak-2047_awarded_the-era-during-which-only-governments-co_334411.jpg)

> [Consider: The human genome consists of about 3.3 billion base pairs. Since there are only four types of pair, that amounts to…](https://sms4smile.com/quotes/seth-shostak/consider-the-human-genome-consists-of-about-3-3-billion-base-pairs/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/b26/seth-shostak-2047_about_consider-the-human-genome-consists-of-ab_3137198.jpg)

> [Are we the only members of the Galaxy that can actually understand what a galaxy is? Could Homo sapiens really be the…](https://sms4smile.com/quotes/seth-shostak/are-we-the-only-members-of-the-galaxy-that-can-actually-understand/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/7e8/seth-shostak-2047_actually_are-we-the-only-members-of-the-galaxy-th_2072937.jpg)

> [We'll be 'outsourcing' our creativity and our thought processes to manufactured components that could be inconspicuously implanted beneath our coiffeurs. Welcome to…](https://sms4smile.com/quotes/seth-shostak/we-ll-be-outsourcing-our-creativity-and-our-thought-processes-to/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/71f/seth-shostak-2047_beneath_we-ll-be-outsourcing-our-creativity-and_2850581.png)

> [Clearly, unless thinking beings inevitably wipe themselves out soon after developing technology, extraterrestrial intelligence could often be millions or billions of years…](https://sms4smile.com/quotes/seth-shostak/clearly-unless-thinking-beings-inevitably-wipe-themselves-out-soon/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/df6/seth-shostak-2047_advance_clearly-unless-thinking-beings-inevitabl_225150.jpg)

> [Even if the Moon didn't exist - even if it had been vaporized billions of years ago by cantankerous Klingons - there…](https://sms4smile.com/quotes/seth-shostak/even-if-the-moon-didn-t-exist-even-if-it-had-been-vaporized-billions/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/0d1/seth-shostak-2047_been_even-if-the-moon-didn-t-exist-even-if-it_1595260.png)

> [I think there's a lot of intelligence out there, but that's just my guess. Question is: Are they peaceable or hostile? You…](https://sms4smile.com/quotes/seth-shostak/i-think-there-s-a-lot-of-intelligence-out-there-but-that-s-just-my/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/666/seth-shostak-2047_any_i-think-there-s-a-lot-of-intelligence-ou_1004649.jpg)

> [The next time you check your moves in the mirror and reflect on how special you are, consider that somewhere in this…](https://sms4smile.com/quotes/seth-shostak/the-next-time-you-check-your-moves-in-the-mirror-and-reflect-on-how/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/af6/seth-shostak-2047_another_the-next-time-you-check-your-moves-in-th_1336326.png)

> [Any society that could come here could pick up the lights from New York. What should we do about that? Should we…](https://sms4smile.com/quotes/seth-shostak/any-society-that-could-come-here-could-pick-up-the-lights-from-new/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/30e/seth-shostak-2047_about_any-society-that-could-come-here-could-p_1127221.jpg)

> [The usual metric for whether a planet is habitable or not is to ascertain whether liquid water could exist on its surface.…](https://sms4smile.com/quotes/seth-shostak/the-usual-metric-for-whether-a-planet-is-habitable-or-not-is-to/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/d14/seth-shostak-2047_ascertain_the-usual-metric-for-whether-a-planet-is_3066973.jpg)

> [Look, science is hard, it has a reputation of being hard, and the facts are, it is hard, and that's the result…](https://sms4smile.com/quotes/seth-shostak/look-science-is-hard-it-has-a-reputation-of-being-hard-and-the-facts/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/3a2/seth-shostak-2047_18th-century_look-science-is-hard-it-has-a-reputation_42498.png)

> [Recent results from astronomers who study the occasional gravitational lensing of unknown worlds by intervening stars suggest that orphan planets could be…](https://sms4smile.com/quotes/seth-shostak/recent-results-from-astronomers-who-study-the-occasional/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/ad4/seth-shostak-2047_astronomy_recent-results-from-astronomers-who-stud_748900.png)

> [The strongest signals leaking off our planet are radar transmissions, not television or radio. The most powerful radars, such as the one…](https://sms4smile.com/quotes/seth-shostak/the-strongest-signals-leaking-off-our-planet-are-radar-transmissions/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/6fe/seth-shostak-2047_could_the-strongest-signals-leaking-off-our-pl_2803087.png)

> [Five centuries ago, Copernicus upset humanity's applecart with the news that the Earth is not the center of the cosmos. It could…](https://sms4smile.com/quotes/seth-shostak/five-centuries-ago-copernicus-upset-humanity-s-applecart-with-the/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/c35/seth-shostak-2047_astronomy_five-centuries-ago-copernicus-upset-huma_1070903.png)

> [While human space travel is daunting, machines - with their indefinitely long lifetimes - could travel the galaxy. It might make little…](https://sms4smile.com/quotes/seth-shostak/while-human-space-travel-is-daunting-machines-with-their-indefinitely/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/6b8/seth-shostak-2047_computers_while-human-space-travel-is-daunting-mac_3127199.png)

> [Nine out of 10 Hollywood aliens look like us. Oh, sure, they might be short, big-eyed and hairless - decked out in…](https://sms4smile.com/quotes/seth-shostak/nine-out-of-10-hollywood-aliens-look-like-us-oh-sure-they-might-be/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/9ef/seth-shostak-2047_afar_nine-out-of-10-hollywood-aliens-look-lik_1361724.jpg)

> [Explorers tend to be the aggressive types - why else would they risk scurvy, mutiny and other bad things to go out…](https://sms4smile.com/quotes/seth-shostak/explorers-tend-to-be-the-aggressive-types-why-else-would-they-risk/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/7f9/seth-shostak-2047_actually_explorers-tend-to-be-the-aggressive-type_2765324.jpg)

> [If you could drive straight down, into a tunnel bored through the crust of the planet, you'd hit this molten mess in…](https://sms4smile.com/quotes/seth-shostak/if-you-could-drive-straight-down-into-a-tunnel-bored-through-the/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/2be/seth-shostak-2047_about_if-you-could-drive-straight-down-into-a_103173.jpg)

> [Consider that the overwhelming majority of those 40,000 near-Earth asteroids are small enough to fit on the parking lot at the mall.…](https://sms4smile.com/quotes/seth-shostak/consider-that-the-overwhelming-majority-of-those-40-000-near-earth/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/1c0/seth-shostak-2047_armageddon_consider-that-the-overwhelming-majority_373970.png)

> [Diminutive worlds are more likely to be rocky, and lapped by oceans and atmospheres. In the vernacular of 'Star Trek,' these would…](https://sms4smile.com/quotes/seth-shostak/diminutive-worlds-are-more-likely-to-be-rocky-and-lapped-by-oceans/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/f19/seth-shostak-2047_begin_diminutive-worlds-are-more-likely-to-be_835937.jpg)

> [On Mars, where the air is spare - a hundred times less dense than on Earth - someone could hear you scream.…](https://sms4smile.com/quotes/seth-shostak/on-mars-where-the-air-is-spare-a-hundred-times-less-dense-than-on/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

[Image](https://sms4smile.com/quotes/i/e94/seth-shostak-2047_air_on-mars-where-the-air-is-spare-a-hundred_2439579.png)

## Other authors on Could

## More by Seth Shostak

> [Studying Sol's interior by looking for analogous patterns on its incandescent face is known as helioseismology, an active - if largely unpronounceable - research…](https://sms4smile.com/quotes/seth-shostak/studying-sol-s-interior-by-looking-for-analogous-patterns-on-its/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [Some pundits have proposed that the aliens have come here to breed with us. Apparently, too much bike riding or something similar has rendered…](https://sms4smile.com/quotes/seth-shostak/some-pundits-have-proposed-that-the-aliens-have-come-here-to-breed/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [As far as I can tell, the only unambiguous consequence of the claimed invasion of Earth by beings from another star system has been…](https://sms4smile.com/quotes/seth-shostak/as-far-as-i-can-tell-the-only-unambiguous-consequence-of-the-claimed/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [Look, science is hard, it has a reputation of being hard, and the facts are, it is hard, and that's the result of 400…](https://sms4smile.com/quotes/seth-shostak/look-science-is-hard-it-has-a-reputation-of-being-hard-and-the-facts/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [Give consideration to the fact that alien astronomers could have scrutinized Earth for more than 4 billion years without detecting any radio signals, despite…](https://sms4smile.com/quotes/seth-shostak/give-consideration-to-the-fact-that-alien-astronomers-could-have/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [In a movie, it's often important to have aliens whose gestures and facial expressions can be 'read' by humans. And in the days before…](https://sms4smile.com/quotes/seth-shostak/in-a-movie-it-s-often-important-to-have-aliens-whose-gestures-and/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [Sure, nobody will make a fortune if we figure out why the Big Bang happened. But just about everyone would like to know.](https://sms4smile.com/quotes/seth-shostak/sure-nobody-will-make-a-fortune-if-we-figure-out-why-the-big-bang/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [If you could drive straight down, into a tunnel bored through the crust of the planet, you'd hit this molten mess in about an…](https://sms4smile.com/quotes/seth-shostak/if-you-could-drive-straight-down-into-a-tunnel-bored-through-the/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [While I have always thought that the motivation for looking for E.T. was both self-evident and patently worthy, it's possible that I'm a victim…](https://sms4smile.com/quotes/seth-shostak/while-i-have-always-thought-that-the-motivation-for-looking-for-e-t/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [I studied Latin in high school, and I was reading stuff from Cicero. And that signal took a few thousand years to get to…](https://sms4smile.com/quotes/seth-shostak/i-studied-latin-in-high-school-and-i-was-reading-stuff-from-cicero/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [About the only things that are unique to Earth are our biota and our culture. If aliens ever come here, they'd most likely be…](https://sms4smile.com/quotes/seth-shostak/about-the-only-things-that-are-unique-to-earth-are-our-biota-and-our/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [This plucky NASA telescope is able to find planets en masse. If you compare planet hunting to prospecting for gold, then Kepler is equivalent…](https://sms4smile.com/quotes/seth-shostak/this-plucky-nasa-telescope-is-able-to-find-planets-en-masse-if-you/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [The most attractive habitats for synthetic sentience might be the vicinities of exceptional sources of energy - for example black holes, or even the…](https://sms4smile.com/quotes/seth-shostak/the-most-attractive-habitats-for-synthetic-sentience-might-be-the/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [Buying insurance is no one's idea of fun. And it's especially easy to berate something as funky-sounding as writing checks to defend our neighborhoods…](https://sms4smile.com/quotes/seth-shostak/buying-insurance-is-no-one-s-idea-of-fun-and-it-s-especially-easy-to/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

> [Plate tectonics is not all havoc and destruction. The slow movement of continents and ocean floors recycles carbon dioxide dissolved in the oceans back…](https://sms4smile.com/quotes/seth-shostak/plate-tectonics-is-not-all-havoc-and-destruction-the-slow-movement-of/)

[Seth Shostak](https://sms4smile.com/quotes/author/seth-shostak/)

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                        "text": "Virtually any pointed edifice is considered a candidate for alien engineering. After all, how could the Egyptians or Mayans have possibly stacked up stone blocks into pyramids?",
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                        "text": "Admittedly, it would take industrial-grade chutzpah and a massive dose of malevolence for anyone to bulldoze the spot where Neil Armstrong stepped off the Eagle lander. But even innocent visits could be damaging.",
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                        "text": "Give consideration to the fact that alien astronomers could have scrutinized Earth for more than 4 billion years without detecting any radio signals, despite the fact that our world is the poster child for habitability.",
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                        "text": "The era during which only governments could put hardware on the Moon is coming to an end. There are 26 private teams competing for the $30 million Google Lunar X-Prize - to be awarded for sending a robotic spacecraft to this nearby world that can roam at least 500 meters, and send back data such as a photo.",
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                        "text": "Consider: The human genome consists of about 3.3 billion base pairs. Since there are only four types of pair, that amounts to 0.8 gigabytes of information, or about what you can fit on a CD. With a microwave radio transmitter, you could beam that amount of information into space in a few minutes, and have it travel to anyone at light speed.",
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                        "text": "Are we the only members of the Galaxy that can actually understand what a galaxy is? Could Homo sapiens really be the pinnacle of Creation - the cleverest critters in the cosmos? If we learn the answer is 'no,' that would affect our philosophies forever.",
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                        "text": "We'll be 'outsourcing' our creativity and our thought processes to manufactured components that could be inconspicuously implanted beneath our coiffeurs. Welcome to the Borg. You might not be entirely comfortable with such cybernetic enhancements, but all the smart money says it's going to happen.",
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                        "text": "Clearly, unless thinking beings inevitably wipe themselves out soon after developing technology, extraterrestrial intelligence could often be millions or billions of years in advance of us. We're the galaxy's noodling newbies.",
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                        "text": "Even if the Moon didn't exist - even if it had been vaporized billions of years ago by cantankerous Klingons - there would still be (somewhat lower) tides raised by the Sun. For creatures dependent on the oceans' ebb and flow, life could go on.",
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                        "text": "I think there's a lot of intelligence out there, but that's just my guess. Question is: Are they peaceable or hostile? You could say that the peaceable ones are just going to stay at home and play with their Nintendos, so if you do meet any of them, they might be hostile.",
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                        "text": "The next time you check your moves in the mirror and reflect on how special you are, consider that somewhere in this universe or in another parallel universe, your double might be doing the same. This would be the ultimate Copernican Revolution. Not only are we not special, we could be infinitely ordinary.",
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                        "text": "Any society that could come here could pick up the lights from New York. What should we do about that? Should we darken New York from now until the last human expires? Would we want to turn off all the radars at JFK airport?",
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                        "text": "The usual metric for whether a planet is habitable or not is to ascertain whether liquid water could exist on its surface. Most worlds will either be too cold, too hot or of a type (like Jupiter) that may have no solid surface and be swaddled in noxious gases.",
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                        "text": "Look, science is hard, it has a reputation of being hard, and the facts are, it is hard, and that's the result of 400 years of science, right? I mean, in the 18th century, in the 18th century you could become an expert on any field of science in an afternoon by going to a library, if you could find the library, right?",
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                        "text": "Recent results from astronomers who study the occasional gravitational lensing of unknown worlds by intervening stars suggest that orphan planets could be at least as numerous as the stars. In other words, there could be hundreds of billions of orphan worlds shuffling through our galaxy.",
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                        "text": "The strongest signals leaking off our planet are radar transmissions, not television or radio. The most powerful radars, such as the one mounted on the Arecibo telescope (used to study the ionosphere and map asteroids) could be detected with a similarly sized antenna at a distance of nearly 1,000 light-years.",
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                        "text": "Five centuries ago, Copernicus upset humanity's applecart with the news that the Earth is not the center of the cosmos. It could be that, before you've paid off your house, we'll learn that the universe is not the center of the universe, either!",
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                        "text": "Nine out of 10 Hollywood aliens look like us. Oh, sure, they might be short, big-eyed and hairless - decked out in skin smoother than gourmet prosciutto. But really, these creatures from afar are usually so anthropomorphic (aside from their grey complexions), they could pass for hominid relatives, freshly flushed from some cryptic jungle habitat.",
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                        "text": "Explorers tend to be the aggressive types - why else would they risk scurvy, mutiny and other bad things to go out there? So, you could say that any aliens that are actually moving and interested in going somewhere are likely to be more aggressive. But who knows?",
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                        "text": "If you could drive straight down, into a tunnel bored through the crust of the planet, you'd hit this molten mess in about an hour. It's called the asthenosphere - a sluggish sea, several hundred miles thick, on which floats the Earth's cool epidermis - the so-called tectonic plates.",
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                        "text": "Consider that the overwhelming majority of those 40,000 near-Earth asteroids are small enough to fit on the parking lot at the mall. And while these rocky runts won't cause Armageddon, they could still flatten such popular hominid hangouts as Manhattan or downtown Des Moines.",
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                        "text": "Diminutive worlds are more likely to be rocky, and lapped by oceans and atmospheres. In the vernacular of 'Star Trek,' these would be M-class planets: life-friendly oases where biology could begin and bumpy-faced Klingons might exist.",
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                        "text": "On Mars, where the air is spare - a hundred times less dense than on Earth - someone could hear you scream. But you'd have to really strain to get anyone's attention. On the Red Planet, where the wind is high-pitched and faint, even a symphony orchestra will sound as thin as cheap gruel.",
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