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