Space Exploration

Better Call Sol

The sun as seen through the SOHO Extreme ultraviolet Imaging Telescope (EIT)
The sun as seen through the SOHO Extreme ultraviolet Imaging Telescope (EIT)
On 10 January 1709, pioneering weather observer William Derham recorded an historic event outside his home near London. He examined his thermometer in the frigid morning air and jotted an entry into his meticulous meteorological log. The prior weeks had been typical for an English winter, but overnight an oppressive cold had lodged itself over the Kingdom. As far as Derham was aware, London had never experienced so few millimeters of mercury as it did that morning: -12º C.

The remarkable cold lingered in Europe for weeks. Lakes, rivers, and the sea froze over, and the soil solidified a meter deep. The cold cracked open trees, crushed the life out of livestock huddling in stables, and made travel a treacherous undertaking. It was the coldest winter in the past 500 years, and one of the coldest moments in a larger global phenomenon known as the Little Ice Age. Likely causes include volcanic activity, oceanic currents, and/or reforestation due to Black-Death-induced population decline. It is nearly certain, however, that it has something to do with the unusually low number of sunspots that appeared at that time, a phenomenon referred to as the Maunder minimum.

We now know that such solar minima correlate quite closely with colder-than-normal temperatures on Earth, but science has yet to ascertain exactly why. Solar maximums, on the other hand, have historically had little noteworthy impact on the Earth apart from extra-splendid auroral displays. But thanks to our modern, electrified, interconnected society these previously innocuous events could cause catastrophic economic and social damage in the coming decades.

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The Martian Express

On the 5th of February 1974, NASA's plucky Mariner 10 space probe zipped past the planet Venus at over 18,000 miles per hour. Mission scientists took advantage of the opportunity to snap some revealing photos of our sister planet, but the primary purpose of the Venus flyby was to accelerate the probe towards the enigmatic Mercury, a body which had yet to be visited by any Earthly device. The event constituted the first ever gravitational slingshot, successfully sending Mariner 10 to grope the surface of Mercury using its array of sensitive instruments. This validation of the gravity-assist technique put the entire solar system within the practical reach of humanity's probes, and it was used with spectacular success a few years later as Voyagers 1 and 2 toured the outer planets at a brisk 34,000 miles per hour.

One of the more intriguing theories to fall out of the early gravity-assist research was a hypothetical spacecraft called the Cycler, a vehicle which could utilize gravity to cycle between two bodies indefinitely-- Earth and Mars, for instance-- with little or no fuel consumption. Even before the complex orbital mathematics were within the grasp of science, tinkerers speculated that a small fleet of Cyclers might one day provide regular bus service to Mars, toting men and equipment to and from the Red Planet every few months. Though this interplanetary ferry may sound a bit like perpetual-motion poppycock, one of the concept's chief designers and proponents is a man who is intimately familiar with aggressive-yet-successful outer-space endeavors: scientist/astronaut Dr. Buzz Aldrin.

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The Third Reich's Diabolical Orbiting Superweapon

Throughout the Second World War, the town of Hillersleben, Germany was home to one of the Third Reich's most crucial weapons research centers. At a sprawling facility nestled in the forested hills, a contingent of 150 engineers and physicists developed and evaluated all manner of experimental weapons, a substantial number of which were ultimately adopted by the Nazi war machine.

When Germany surrendered in May 1945, the scientists at Hillersleben were forced to abandon an assortment of death-bringing innovations at various stages of completion. Among these were a rocket-assisted artillery shell which had 50% more range than standard artillery, a 600mm mortar which fired one-ton self-propelled projectiles for up to three and a half miles, a modified Tiger tank which could fire 760-pound rockets up to six miles, and a chain-like projectile made up of small, linked rockets with a range of 100 miles. But the military masterminds' most sinister ambitions were embodied in their behemoth Sonnengewehr, or "Sun Gun" project-- an orbital weapon intended to exact fiery punishment upon the enemies of the Third Reich, forever establishing their dominance over the genetically inferior Untermenschen of the Earth.

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The Origami Resolution

Goliath Beetle, robert j. lang origami
Goliath Beetle, robert j. lang origami
Since childhood Dr. Robert Lang has practiced origami. It was the convergence of his intensely creative mind and this ancient Japanese tradition that gave rise to his unique style of origami, which he developed into a renewed art and ultimately a science of practical application.

His intricate paper insect creations were a departure from the standard boats and cranes that have long been the tradition of origami. Over time his works grew more complex, featuring hundreds of folds and multiple pieces of paper, such as a full-scale cuckoo clock. Between his efforts to earn a PhD in applied physics, his job at NASA's Jet Propulsion laboratory, his eighty technical papers, and his forty-six patents in optoelectronics and lasers, he somehow found time to implement and evolve a number of original origami designs.

The practicality of his scientific research began to influence his origami designs, until the line between the two began to blur. He participated in a project at EASi Engineering to develop complicated crease patterns for airbag folding designs. Lang also worked to design a mesh wire heart support to be folded and implanted in congestive heart failure patients; once inside, it would expand, protecting the heart. His most ambitious project to date, however, is shared with a team at the Lawrence Livermore National Laboratory, with whom he has developed a space telescope – one that is forty times larger than the Hubble and collapsible for space travel through a series of precise origami folds.

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Space Radio: More Static, Less Talk

Arecibo Observatory, a 305-meter-wide radio telescope (courtesy of the NAIC - Arecibo Observatory, a facility of the NSF)
Arecibo Observatory, a 305-meter-wide radio telescope (courtesy of the NAIC - Arecibo Observatory, a facility of the NSF)
Owing to radio's aptitude in transporting information, our planet is endlessly peppered by man-made low-frequency radiation. Phone conversations, computer data, text messages, radar echoes, sitcoms, and morning DJ chatter are all electromagnetically belched in every direction at the speed of light-- including straight up into outer space.

Purveyors of science fiction are fond of exploring the ramifications of this radio leakage, suggesting that someday an advanced alien race might materialize to befriend, enslave, or destroy humanity after a little electromagnetic eavesdropping from afar. Indeed, if there happen to be any radio-savvy civilizations within 114 light years of Earth-- an area which encompasses roughly fifteen thousand stars-- humanity's earliest meaningful transmissions will have already reached them.

Similar speculation appears in science non-fiction, such as the Search for Extra-Terrestrial Intelligence (SETI) project, which strains its giant radio ears for extraterrestrial signals. When consulting the wisdom of probability, one finds that the universe ought to be teeming with technology-toting aliens; but aside from a couple of interesting-but-inconclusive detections, no discernibly intelligent patterns have ever been observed by Earth's space-listening instruments. One might surmise that the conspicuous silence is "evidence of absence," but such a conclusion might be a bit premature under the circumstances.

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The Daedalus Starship

Rendered image of the Daedalus, courtesy of <a href='http://www.bisbos.com/rocketscience/spacecraft/daedalus/image_depart2.html'>Adrian Mann</a>
Rendered image of the Daedalus, courtesy of Adrian Mann
In the winter of 1973, the men and women of the British Interplanetary Society convened in London to engage in some lively interstellar discourse. The members' intent was to draw up a workable design for an extremely ambitious unmanned space probe, one capable of reaching a neighboring star system within fifty years. Moreover, they limited themselves to using only current and near-future technology, as this would allow the theories to be translated into practice one day if the concept proved feasible.

In order to reach even the nearest stars within the allotted fifty-year window, the thirteen scientists and engineers of the research group had a formidable task ahead of them. Their space probe would be required to accelerate to astonishing speeds, and it would need to weather the constant battering of particles from the soup of space debris known as the Interstellar Medium. In spite of these problems, in 1978 the organization presented a highly developed spaceship concept which may yet prove to be the model for future interstellar travel. It was called Project Daedalus.

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Outer Space Exposure

In scores of science fiction stories, hapless adventurers find themselves unwittingly introduced to the vacuum of space without proper protection. There is often an alarming cacophony of screams and gasps as the increasingly bloated humans writhe and spasm. Their exposed veins and eyeballs soon bulge in what is clearly a disagreeable manner. The ill-fated adventurers rapidly swell like over-inflated balloons, ultimately bursting in a gruesome spray of blood.

As is true with many subjects, this representation in popular culture does not reflect the reality of exposure to outer space. Ever since humanity first began to probe outside of our protective atmosphere, a number of live organisms have been exposed to vacuum, both deliberately and otherwise. By combining these experiences with our knowledge of outer space, scientists have a pretty clear idea of what would happen if an unprotected human slipped into the cold, airless void.

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How I Learned to Stop Worrying and Love the Atomic Spaceship

The year was 1957. The power of the atom had been unleashed upon the world. Technology--along with just about everything else--was booming. Safe, plentiful nuclear energy promised to be too cheap to meter, and radioactive waste seemed only a minor concern. It was an age of optimism and naiveté; a time of action without consequences.

Though man was the master of the Earth, only once had he managed to explore beyond the confines of the atmosphere, in the form of a beachball-sized spacecraft called Sputnik. Werner von Braun's rocket men had drawn up plans for spacecraft that would launch humans into orbit, but even then it was clear that inefficient chemical rockets would allow only a few to enter space; the rest of mankind would be mere spectators. Fresh from their success with the atomic bomb, a small team of Manhattan Project physicists gathered to try and change all that. Working in secret within the brand new Advanced Research Projects Agency (ARPA, now called DARPA), they designed and tested an enormously ambitious nuclear spaceship concept that would have made everything the Soviets and NASA were doing seem like hobby rockets in comparison. The codename was Project Orion.

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DAMN LARGE

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