More Yuva Artwork!

gliese-581.jpgMore news on the collaborative writing front! A few weeks back, I found myself tinkering with some of the ideas for the upcoming anthology known as Yuva – the one that deals with space exploration and colonization in the not-too-distant future. As a result of this tinkering, I began to look at some of our concept art and began to ponder making some changes…

Basically, in the anthology me and my writer’s group are crafting, there would be multiple waves of settlers arriving at the planet known as Gliese 581 g (aka. Yuva). Whereas the First Wave would be arriving in ships that relied on relativistic engines (slower than the speed of light), subsequent “waves” would be using something a little more advanced.

Second WaveHence the design you see above. Here, the ship is one of three that would be bringing the Second Wave to Yuva. Note the torus ring that encloses the ship. This indicates that the vessel comes equipped with an Alcubierre Drive, a proposed FTL system that is currently being investigated by NASA’s Engineering Directorate.

Based on the field equations of theoretical physicist Miquel Alcubierre, the drive does not  exceeding the speed of light within its local frame of reference, but allows a spacecraft to contract space in front of it and expand space behind it, resulting in effective faster-than-light travel.

ixs-enterpriseThe design was inspired in large part by the IXS Enterprise designs by Mark Rademaker, an artist who sought to visualize what a spaceship that relied on the Alcubierre Drive might look like. As you can see, he too pictured a ship that would have a ring-shaped torus, but is more suited to our near-future aspirations of exploration.

For the sake of Yuva, the Second Wave ships need to be especially exotic. Which would mean that the vessels have hulls composed of nanofabricated materials that are completely seamless. And whereas the First Wave ships would rely on antimatter engines that would spew energy out the back, the new ships would have no thruster nozzles to speak of.

space-colony-art-670It’s all in keeping with the idea of rapidly advancing technology, and how the effects of space travel exacerbate the gap between new and obsolete. Whereas the First Wave of colonists would take 100+ plus years to get to a star within our stellar neighborhood, subsequent waves would only need a few years.

This would mean that those who came next would be at least a century ahead in terms of development. And by the 22nd/23rd centuries, when the story is taking place, the leaps and bounds taking place in that amount of time would be immense. New waves of settlers would overwhelm the old with a sense of future shock…

space_elevator2But I’m venturing into spoiler territory here! Rest assured, when the anthology is complete, there’s going to be plenty of these kinds of technological, social and predictive issues being explored. And throughout all that, a sense of high adventure as well. After all, we started this project wanting to capture the awe and wonder that comes from space exploration.

Come hell or high water, that is what we intend to do! Stay tuned for more on this book as it develops…

NASA’s Proposed Warp-Drive Visualized

ixs-enterpriseIt’s no secret that NASA has been taking a serious look at Faster-Than-Light (FTL) technology in recent years. It began back in 2012 when Dr Harold White, a team leader from NASA’s Engineering Directorate, announced that he and his team had begun work on the development of a warp drive. His proposed design, an ingenious re-imagining of an Alcubierre Drive, may eventually result in an engine that can transport a spacecraft to the nearest star in a matter of weeks — and all without violating Einstein’s law of relativity.

In the spirit of this proposed endeavor, White chose to collaborate with an artist to visualize what such a ship might look like. Said artist, Mark Rademaker, recently unveiled the fruit of this collaboration in the form of a series of concept images. At the heart of them is a sleek ship nestled at the center of two enormous rings that create the warp bubble. Known as the IXS Enterprise, the ship has one foot in the world of science fiction, but the other in the realm of hard science.

ixs-enterprise-0The idea for the warp-drive comes from the work published by Miguel Alcubierre in 1994. His version of a warp drive is based on the observation that, though light can only travel at a maximum speed of 300,000 km/sec (186,000 miles per second, aka. c), spacetime itself has a theoretically unlimited speed. Indeed, many physicists believe that during the first seconds of the Big Bang, the universe expanded at some 30 billion times the speed of light.

The Alcubierre warp drive works by recreating this ancient expansion in the form of a localized bubble around a spaceship. Alcubierre reasoned that if he could form a torus of negative energy density around a spacecraft and push it in the right direction, this would compress space in front of it and expand space behind it. As a result, the ship could travel at many times the speed of light while the ship itself sits in zero gravity – hence sparing the crew from the effects of acceleration.

alcubierre-warp-drive-overviewUnfortunately, the original maths indicated that a torus the size of Jupiter would be needed, and you’d have to turn Jupiter itself into pure energy to power it. Worse, negative energy density violates a lot of physical limits itself, and to create it requires forms of matter so exotic that their existence is largely hypothetical. In short, what was an idea proposed to circumvent the laws of physics itself fell prey to their limitations.

However, Dr Harold “Sonny” White of NASA’s Johnson Space Center reevaluated Alcubierre’s equations and made adjustments that corrected for the required size of the torus and the amount of energy required. In the case of the former, White discovered that making the torus thicker, while reducing the space available for the ship, allowed the size of it to be greatly decreased – from the size of Jupiter down to a width of 10 m (30 ft), roughly the size of the Voyager 1 probe.

alcubierre-warp-drive-overviewIn the case of the latter, oscillating the bubble around the craft would reduce the stiffness of spacetime, making it easier to distort. This would reduce the amount of energy required by several orders of magnitude, for a ship traveling ten times the speed of light. According to White, with such a setup, a ship could reach Alpha Centauri in a little over five months. A crew traveling on a ship that could accelerate to just shy of the speed of light be able to make the same trip in about four and a half years.

Rademaker’s renderings reflect White’s new calculations. The toruses are thicker and, unlike the famous warp nacelles on Star Trek’s Enterprise, their design is the true function of hurling the craft between the stars. Also, the craft, which is divided into command and service modules, fits properly inside the warp bubble. There are some artistic additions, such as some streamlining, but no one said an interstellar spaceship couldn’t be functional and pretty right?

ixs-enterprise-2For the time being, White’s ideas can only be tested on special interferometers of the most exacting precision. Worse, the dependence of the warp on negative energy density is a major barrier to realization. While it can, under special circumstances, exist at a quantum level, in the classical physical world that this ship must travel through, it cannot exist except as a property of some form of matter so exotic that it can barely be said to be capable of existing in our universe.

Though no one can say with any certainty when such a system might be technically feasible, it doesn’t hurt to look ahead and dream of what may one day be possible. And in the meantime, you can check out Rademaker’s entire gallery by going to his Flickr account here. And be sure to check out the video of Dr. White explaining his warp-drive concept at SpaceVision 2013:


Sources:
gizmag.comIO9.com, cnet.com
, flickr.com

NASA Designing World’s First FTL

alcubierre-warp-drive-overviewA few months ago, physicist Harold White shocked and stunned the world when he announced that he and his team at NASA were beginning work on the world’s first faster-than-light warp drive. Naturally, this produced a whole slew of questions, not the least of which was what model his team would be considering. After all, there have been countless theories put forth over the years as to how humanity could one day break the “light barrier”. Which theory White and his team would pursue was naturally the first on everybody’s mind.

Apparently, White’s proposed design will be a re-imagining of the Alcubierre Drive, a concept which has already been extensively popularized in science fiction and pop culture. Proposed by Miguel Alcubierre in 1994 in his seminal paper: “The Warp Drive: Hyper-Fast Travel Within General Relativity,” Alcubierre suggested a mechanism by which space-time could be “warped” both in front of and behind a spacecraft. After going over the equations in detail, White believed he found a way to make the theory work.

All of this began in October of last year, where White was preparing for a talk he was to give as part of the kickoff of the 100 Year Starship project in Orlando, Florida. While putting together his presentation on warp, he began toying with Alcubierre’s field equations, mainly out of curiosity. After making some adjustments, he came to the conclusion that something truly workable was there, and presented his findings this past October in Atlanta, where the 100 Year Starship project was meeting once again.

alcubierre-warp-drive-overviewThe equations and theory postulates that since space-time can be contracted and expanded, empty space behind a starship could be made to expand rapidly, pushing the craft in a forward direction. Passengers would perceive it as movement despite the complete lack of acceleration, and vast distances (i.e. light years) could be passed in a matter of days and weeks instead of decades. What’s more, this “warp drive” would allow for FTL while at the same time remaining consistent with Einstein’s theory of Relativity.

This has been a major hurdle for physicists looking for ways around the speed of light, since all previous theories required a cosmic model where Relativity – fundamental to our understanding of the universe – would not apply. At the same time, the physics described in the Alcubierre process sound like something directly out of Star Trek, something all sci-fi geeks are sure to notice! It begins with a spheroid object being placed between two regions of space-time (one expanding and one contracting), which in turn generates a “warp bubble” that moves space-time around the object, effectively repositioning it.

The end result is faster-than-light travel without the spheroid having to move with respect to its local frame of reference. In short, those aboard the object would notice the repositioning of their spacecraft, but would experience no “time dilation”, where their perception of time differs greatly from those in a different frame of reference. Or to put it another way, the Alcubierre drive could transport people from Earth to Mars and back again, and for all concerned (the passengers and people Earthside) there would be little difference in the amount of time experienced. None of this, “I’m a year older, but everybody I knew is dead!” stuff. You have to admit, that’s a real perk!

But of course, there are a lot of challenges ahead for White and his team. For example, in an interview with IO9, White said: “Remember, nothing locally exceeds the speed of light, but space can expand and contract at any speed. However, space-time is really stiff, so to create the expansion and contraction effect in a useful manner in order for us to reach interstellar destinations in reasonable time periods would require a lot of energy.” Luckily, his reworking of the equations has brought that requirement done somewhat, but the amounts required mean that a great deal of research and development is still needed.

Perhaps if we can find a way to work cold fusion in the mix, or build an anti-matter reactor. Maybe some hydrogen ramscoops and a Heisenberg compensator, then we’d be in business! Might we need some dilithium crystals too? I’ll call Jordie LaForge and tell him to get on it! 😉

warp_drive

Of Faster-Than-Light Travel

It’s a popular concept, the fictional technology that could help us break that tricky light barrier. And it’s not hard to see why. The universe is a really, really, REALLY big place! And if we ever want to begin exploring and colonizing our tiny corner of it – and not have to deal with all the relativistic effects of time dilation and long, long waits – we better find a way to move faster.

And this is where various franchises come up with their more creative take on physics and the natural universe. Others, they just present it as a given and avoid any difficult, farfetched, or clumsy explanations. And in the end, we the viewers go along because we know that without it, space travel is going to be one long, tedious, and mind-bendingly complex journey!

Alcubierre Drive:
Proposed by Miguel Alcubierre as a way of resolving Einstein’s field equations, the Alcubierre Drive is an untested by possible way to achieve FTL travel. As opposed to Warp, Foldspace, or most other proposed means of FTL that involve some kind of internal propulsion of jump drive, the Alcubierre Drive is based on the idea of generating a wave that a ship would then “surf” in order to travel.

The creation of this wave would cause the fabric of space ahead of the spacecraft to contract and the space behind it to expand. The ship would then ride this wave inside a region of flat space known as a warp bubble and be carried along as the region itself moves through space. As a result, conventional relativistic effects such as time dilation would not apply in the same way as if the ship itself were moving.

The Alcubierre drive is featured in a few different science fiction genres, mainly those of the “hard” variety. This includes Stephen Baxter’s Ark, M. John Harrison’s novel Light, Warren Ellis and Colleen Doran’s Orbiter, and Ian Douglas’s Star Carrier where it is the primary means of transport.

FTL Drive:
The primary means of interstellar travel in the Battlestar Galactica universe, where every ship larger than a in-system transport is equipped with an FTL drive. How it works is never really explained, but it is clear that the technology is complex and involves a great deal of calculation. This is not only to ensureolve n accurate relocation through space-time, but also to make sure they don’t up jumping too close to a planet, star, or worse, right in the middle of either.

Whereas Colonial ships use their own computers to calculate jumps, Cylon ships rely on the Hybrid. These “machines” are essentially semi-organic computers, and represent the first step in Cylon evolution from pure machines to organic beings. Apparently, the hybrids were more sophisticated than Colonial computers, especially the aging Galactica. Hence, they were able to calculate jumps more quickly and accurately.

Holtzman Drive:
This FTL drive system comes to us from the Dune universe, and is otherwise known as a “Foldspace Engine”. Relying on principles that are not entirely clear to those in the Dune universe, the system involves depositing a ship from one point in space-time to another instantaneously. Though the workings of the drive are never really explained, it is intimated in Chapterhouse: Dune that tachyons are involved.

Another key component in the system is a Guild Navigator, a mutant who has been given natural prescient abilities thanks to constant exposure to spice. Using this prescience, the Navigator “sees” a path through space-time in order to guide the ship safely through. But in time, the Ixians invented a machine that was capable of doing this job as well, thus making the entire process automated and breaking the Guild’s monopoly on spacing.

Hyperspace:
Like the Warp drive, the terms hyperspace and hyperdrive have become staples withing the science fiction community. It’s most popular usage comes from Star Wars where it is the principle means of interstellar travel. Though it is never explained how a hyperdrive works, it is made abundantly clear through a series of visuals in the first and subsequent movies that it involves speeds in excess of the speed of light.

In addition, Han Solo indicated in the original movie that the Falcon’s top speed was “point five past light-speed”, indicating that it can travel 1.5 c. All other references to hyperspace speed factors in the franchise are similar, with velocities given in terms of a decimal point value. As a fast ship, the Falcon can reach point five, whereas most of the larger Imperial and Rebel ships can make only point three or four at most.

Though Star Wars is the most popular example of hyperspace, it is by no means the earliest. The first recorded example was in John Campbell’s “Islands of Space,” which appeared in Amazing Stories in 1931. Arthur C. Clarke’s also mentioned hyperspace in his 1950 story Technical Error. However, the most enduring example comes from Asimov’s Foundation universe, where hyperspace is the principal means of travel in the Galactic Republic. In I, Robot, the invention of the “hyperspatial drive” is the basis of one of the short stories, and was meant to provide a sense of continuity with his earlier Foundation series.

Other franchises that feature the concept of hyperspace include Babylon 5, Homeworld, Macross/Robotech, and Stargate. Combined with Star Wars and the Foundation series, it is the most popular – albeit the most ill-defined -form of FTL in the realm of science fiction.

Infinite Probability Drive:
The perfect mixture of irreverence and science: the Infinite Probability Drive from The Hitchhikers Guide to the Galaxy. This FTL concept is based on a particular perception of quantum theory which states that a subatomic particle is most likely to be in a particular place, such as near the nucleus of an atom, but there is also a small probability of it being found very far from its point of origin.

Thus, a body could travel from place to place without passing through the intervening space if you had sufficient control of probability. According to the Guide, in this way the drive “passes through every conceivable point in every conceivable universe almost simultaneously,” meaning the traveller is “never sure where they’ll end up or even what species they’ll be when they get there” and therefore it’s important to dress accordingly!

Subspace Jump Drive:
Here we have an FTL concept which comes from one of my favorite games of all time, Descent Freespace. Subspace jumps, relying on the drive system of the same name, represent a very quick method of interstellar travel. By relying on subspace “corridors” that run from one point in space-time to another, a ship is able to move quickly from one star system to the next.

The only drawback to this concept is the fact that travel must occur along officially designated “nodes”. These nodes usually pass between large gravitational sources (i.e. between stars systems) but also can exist within a system itself. Virtually all nodes are unstable, existing for mere seconds or minutes at a time. However, nodes which will last for centuries or longer are designated as “stable” and used for transit.

Another favorite franchise which uses a similar concept is the Wing Commander universe. In all versions of the game, particularly Wing Commander: Privateer, interstellar travel comes down to plotting jumps from predesignated points in space. One cannot simply jump from one spot to another provided accurate calculations are made, they have to use the mapped out points or no jump is possible. This, as opposed to hyperspace travel, posits that subspace is a reality that exists only in certain areas of space-time and must be explored before it can be used.

TARDIS:
Officially, the Time and Relative Dimension in Space is a time machine and spacecraft that comes to us from British science fiction television program Doctor Who and its associated spin-offs. Produced by the advanced race known as the Time Lords, an extraterrestrial civilization to which the Doctor belongs, this device that makes his adventures possible.

Basically, a TARDIS gives its pilot the ability to travel to any point in time and any place in the universe. Based on a form of biotechnology which is grown, not assembled, they draw their power primarily from an artificial singularity (i.e. a black hole) known as the “Eye of Harmony”. Other sources of fuel include mercury, specialized crystals and a form of temporal energy.

Each TARDIS is primed with the biological imprint of a Time Lord so that only they can use it. Should anyone else try to commandeer one, it undergoes molecular disintegration and is lots. The interior of a TARDIS is much larger than its exterior, which can blend in with its surroundings using the ship’s “chameleon circuit”. Hence why it appears to outsiders as a phone booth in the series.

Warp Drive:
Possibly the best known form of FTL travel which comes to us from the original Star Trek and its many spinoffs. In addition to being a prime example of fictional FTL travel, it is also perhaps the best explained example.Though said explanation has evolved over time, with contributions being made in the original series, TNG, and the Star Trek technical manual, the basic concept remains the same.

By using a matter/antimatter reactor to create plasma, and by sending this plasma through warp coils, a ship is able to create a warp bubble that will move the craft into subspace and hence exceed the speed of light. Later explanations would go on to add that an anti-matter/matter reaction which powers the two separate nacelles of the ship are what create the displacement field (the aforementioned “bubble”) that allows for warp.

Apparently, Warp 10 is the threshold for warp speed, meaning that it is the point at which a ship reaches infinite speed. Though several mentions are made of ships exceeding this threshold, this was later explained as being the result of different scales. Officially, it is part of the Star Trek canon that no ship is capable of exceeding Warp 10 without outside help. When that occurs, extreme time dilation, such as anti-time, occurs, which can be disastrous for the crew!

In addition to Star Trek, several other franchises have made mention of the Warp Drive. This includes StarCraft, Mass Effect, Starship Troopers, and Doctor Who.

Final Thoughts:
Having looked through all these examples, several things become clear. In fact, it puts me in mind of a clip produced by the Space Network many years ago. Essentially, Space explored the differences between FTL in past and present franchises, connecting them to developments in real science. Whereas Warp and Hyperspace tended to be the earliest examples, based on the idea of simply exceeding the speed of light, thereby breaking the law of physics, later ideas focused on the idea of circumventing them. This required that writers come up with fictional ideas that either relied on astrophysics and quantum theory or exploited the holes within them.

One such way was to use the idea of “wormholes” in space-time, a hypothetical theory that suggests that space is permeated by topological holes that could act as “shortcuts” through space-time. A similar theory is that of subspace, a fictional universe where the normal rules of physics do not apply. Finally, and also in the same vein, is the concept of a controlled singularity, an artificial black hole that can open a rift through space-time and allow a ship to pass from one point in the universe to another.

Explanations as to how these systems would work remains entirely hypothetical and based on shaky science. As always, the purpose here is to allow for interstellar travel and communications that doesn’t take decades or even centuries. Whether or not the physics of it all works is besides the point. Which brings me to two tentative conclusions.

  1. Explanations Need Not Apply: Given the implausible (or at the very least, inexplicable) nature of most FTL concepts, the best sci-fi is likely to be the stuff that doesn’t seek to explain how its FTL system of choice works. I’st simply there and does the job. People hit a button, push a lever, do some calculations, or fly into a jump gate. Then boom! seconds later (or days and weeks) and they find themselves on the other side, light years away and ready to do their mission!
  2. That’s Hard: Given how any story that involves relativistic space travel, where both time dilation and confusing time jumps are necessarily incorporated into the story, only the hardest of hard sci-fi can ever expect to do without warp drives, hyperspace, jump or FTL drives. Any other kind of sci-fi that is looking to be accessible, and therefore commercially successful, will have to involve some kind of FTL or face extinction.

Well, that’s all I got for the time being. In the meantime, keep your eyes on the skies and don’t stop dreaming about how we’re one day going to get out there. For even if we start sending ships beyond our solar system in the near future, it’s going to be well into the distant future before they get anywhere and we start hearing back from them. At least until someone figures out how to get around Einstein’s Theory of Relativity, damn bloody genius! Until then, I’d like to sign off with a tagline:

This has been Matt Williams with another conceptual post. Good night, and happy spacing!