Neděle 21. září 2014

Warp Drive May Be More Feasible Than Thought, Scientists Say

space.com,   Pondělí˝ 17. září 2012

A ring-shaped warp drive device could transport a football-shape starship (center) to effective speeds faster than light.
A ring-shaped warp drive device could transport a football-shape starship (center) to effective speeds faster than light. The concept was first proposed by Mexican physicist Miguel Alcubierre.
CREDIT: Harold White 

HOUSTON — A warp drive to achieve faster-than-light travel — a concept popularized in television's Star Trek — may not be as unrealistic as once thought, scientists say.

warp drive would manipulate space-time itself to move a starship, taking advantage of a loophole in the laws of physics that prevent anything from moving faster than light. A concept for a real-life warp drive was suggested in 1994 by Mexican physicist Miguel Alcubierre; however, subsequent calculations found that such a device would require prohibitive amounts of energy.

Now physicists say that adjustments can be made to the proposed warp drive that would enable it to run on significantly less energy, potentially bringing the idea back from the realm of science fiction into science.

 

"There is hope," Harold "Sonny" White of NASA's Johnson Space Center said here Friday (Sept. 14) at the100 Year Starship Symposium, a meeting to discuss the challenges of interstellar spaceflight.

 

 

Warping space-time

An Alcubierre warp drive would involve a football-shape spacecraft attached to a large ring encircling it. This ring, potentially made of exotic matter, would cause space-time to warp around the starship, creating a region of contracted space in front of it and expanded space behind. [Star Trek's Warp Drive: Are We There Yet? | Video]

Meanwhile, the starship itself would stay inside a bubble of flat space-time that wasn't being warped at all.

"Everything within space is restricted by the speed of light," explained Richard Obousy, president of Icarus Interstellar, a non-profit group of scientists and engineers devoted to pursuing interstellar spaceflight. "But the really cool thing is space-time, the fabric of space, is not limited by the speed of light."

With this concept, the spacecraft would be able to achieve an effective speed of about 10 times the speed of light, all without breaking the cosmic speed limit.

The only problem is, previous studies estimated the warp drive would require a minimum amount of energy about equal to the mass-energy of the planet Jupiter.

But recently White calculated what would happen if the shape of the ring encircling the spacecraft was adjusted into more of a rounded donut, as opposed to a flat ring. He found in that case, the warp drive could be powered by a mass about the size of a spacecraft like the Voyager 1 probe NASA launched in 1977.

Furthermore, if the intensity of the space warps can be oscillated over time, the energy required is reduced even more, White found.

"The findings I presented today change it from impractical to plausible and worth further investigation," White told SPACE.com. "The additional energy reduction realized by oscillating the bubble intensity is an interesting conjecture that we will enjoy looking at in the lab."

 

Where should the first permanent space colony be built?
The Moon - It's our nearest neighbor after all.Mars - The Red Planet should be the next giant leap.Deep Space - Orbiting outposts are the only way to go.Asteroid Waystation - We should hitch a ride on a space rock.

 

Laboratory tests

White and his colleagues have begun experimenting with a mini version of the warp drive in their laboratory.

They set up what they call the White-Juday Warp Field Interferometer at the Johnson Space Center, essentially creating a laser interferometer that instigates micro versions of space-time warps.

"We're trying to see if we can generate a very tiny instance of this in a tabletop experiment, to try to perturb space-time by one part in 10 million," White said.

He called the project a "humble experiment" compared to what would be needed for a real warp drive, but said it represents a promising first step.

And other scientists stressed that even outlandish-sounding ideas, such as the warp drive, need to be considered if humanity is serious about traveling to other stars.

"If we're ever going to become a true spacefaring civilization, we're going to have to think outside the box a little bit, we're going to have to be a little bit audacious," Obousy said.

You can follow SPACE.com assistant managing editor Clara Moskowitz on Twitter@ClaraMoskowitz. Follow SPACE.com on Twitter @Spacedotcom. We're also on Facebook & Google+.



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Longchamp Outlet, http://www.salongchamppairs.com/
Canada Goose Outlet, http://www.canada-gooser.com/
Burberry Outlet, http://www.burberryoutlet2014.com/
Michael Kors Outlet, http://www.michaelkors.so/
Oakley Sunglaases Factory, http://www.oakley-sunglassfactory.com/
North Face Outlet Online, http://www.north-faceoutlets.net/
Moncler Clearance, http://www.moncler-clearance.com/
Woolrich Clearance, http://www.woolrich-clearance.com/
Barbour Jackets Outlet Online, http://www.barbour-jacketsoutlet.com/
Moncler Jackets Outlet Online, http://www.moncler-jacketsoutletonline.com/
Monster Beats Outlet, http://www.monsterbeatsbydres.net/
Louis Vuitton Outlet, http://www.louis-vuittonblackfriday.com/
Louis Vuitton Factory, http://www.lv-guccishoesfactory.com/
Discount Clothes Sale, http://www.cheapdiscountoutlet.com/
Coach Outlet Online, http://coachoutlet.iwopop.com/
Coach Factory Outlet, http://www.coachsfactoryoutlet.com/
Coach Black Friday, http://www.coach-blackfriday2014.com/
Coach Store Outlet Online, http://www.coach-storeoutletonline.com/
Coach Factory Outlet Online, http://www.coach-factorysoutletonline.com/
Coach Outlet, http://www.coachccoachoutlet.com/
Coach Factory, http://www.coach-factories.net/
Coach Purses Outlet Online, http://www.coach-pursesoutletonline.com/
Coach Outlet USA, http://www.coach-outletsusa.com/
Coach Outlet Online USA, http://www.zxcoachoutlet.com/
Coach Factory Outlet Online, http://www.mischristmas.com/
Black Friday, http://www.misblackfriday.com/
Coach Purses Outlet Online, http://www.newoutletonlinemall.com/
Ralph Lauren Polo, http://www.ralphlaurenepolo.com/
Ralph Lauren Black Friday
Coach Outlet OnlineCoach Outlet Online, http://www.shopbestgoods.com/
Louis Vuitton Outlet,http://www.shopbestgoods.com/louis-vuitton-bags-c-1.html
Hermes Bags Outlet,http://www.shopbestgoods.com/hermes-bags-c-2.html
Prada Outlet Online,http://www.shopbestgoods.com/prada-bags-c-3.html
Chanel Outlet,http://www.shopbestgoods.com/chanel-bags-c-4.html
Gucci Outlet,http://www.shopbestgoods.com/gucci-bags-c-5.html
Burberry Outlet Online,http://www.shopbestgoods.com/burberry-bags-c-6.html
Celine Outlet Online,http://www.shopbestgoods.com/celine-bags-c-7.html
Balenciaga Outlet Online,http://www.shopbestgoods.com/balenciaga-bags-c-8.html
Christian Dior Outlet,http://www.shopbestgoods.com/christian-dior-bags-c-9.html
Chloe Outlet,http://www.shopbestgoods.com/chloe-bags-c-10.html
Bvlgari Outlet,http://www.shopbestgoods.com/bvlgari-bags-c-11.html
Bally Outlet Online,http://www.shopbestgoods.com/bally-bags-c-12.html
coach Outlet Online,http://www.shopbestgoods.com/coach-bags-c-13.html
Michael Kors Outlet,http://www.shopbestgoods.com/michael-kors-bags-c-14.html
MCM Backpack Outlet,http://www.shopbestgoods.com/mcm-bags-c-15.html
Fendi Outlet,http://www.shopbestgoods.com/fendi-bags-c-16.html
Mulberry Outlet Online,http://www.shopbestgoods.com/mulberry-bags-c-17.html
Marc Jacobs Outlet Online,http://www.shopbestgoods.com/marc-jacobs-bags-c-18.html
Miu Miu Outlet,http://www.shopbestgoods.com/miu-miu-bags-c-19.html
Ysl Outlet,http://www.shopbestgoods.com/ysl-bags-c-20.html
Tory Burch Outlet,http://www.shopbestgoods.com/tory-burch-bags-c-21.html
Givenchy Outlet,http://www.shopbestgoods.com/givenchy-bags-c-22.html
Ferragamo Outlet,http://www.shopbestgoods.com/ferragamo-bags-c-23.html
Lancel Outlet,http://www.shopbestgoods.com/lancel-bags-c-24.html
Loewe Bags Outlet,http://www.shopbestgoods.com/loewe-bags-c-25.html
Tods Outlet,http://www.shopbestgoods.com/tods-bags-c-26.html
Paul Smith Outlet,http://www.shopbestgoods.com/paul-smith-bags-c-27.html
D&G Bags Outlet,http://www.shopbestgoods.com/dg-bags-c-28.html
Alexander Wang Outlet,http://www.shopbestgoods.com/alexander-wang-bags-c-29.html
Bottega Veneta Outlet,http://www.shopbestgoods.com/bottega-veneta-bags-c-30.html

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