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NASA Warp Drive - "Speeds" that Could Take a Starship to Alpha Centauri in Two Weeks

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The first steps towards interstellar travel have been taken, but the stars are very far away. Voyager 1 is about 18 light-hours distant from Earth and is travelling with a velocity of 0.006 percent of light speed .... meaning it will take about 17,000 years to travel one light-year!!!Fortunately, the elusive "Warp Drive" now appears to be evolving past difficulties with new theoritical advances and a NASA test rig under development to measure artificially generated warping of space-time.The Warp Drive broke away from being a wholly fictional concept in 1994 when physicist Miguel Alcubierre suggested that faster-than-light (FTL) travel was possible if you remained still on a flat piece of spacetime inside a warp bubble that was made to move at superluminal velocity. Rather like a magic carpet.The main idea here is that although no material objects can travel faster than light there is no known upper speed to the ability of spacetime itself to expand and contract.The warp effect uses gravitational effects to compress the spacetime in front of a spacecraft then expand the spacetime behind it. The bit of spacetime within the warp bubble is flat so the spacecraft would float at Zero-G along the wave of compressed and expanded spacetime. The net effect is rather like surfing, where you are nearly stationary with respect to the wave, but are traveling with the speed of the wave.Whereas many of the theoretical studies consider a warp bubble moving at ten times the speed of light, there is no known limit to the potential speed. Such a warp bubble could in principle be used to enable subluminal travel (travel slower than light) as well as superluminal travel (travel faster than light)This may seem a silly choice - why travel slow rather than fast? However, it is likely to turn out far easier to achieve a subluminal warp drive for a number of fundamental reasons.Besides, space travel at 90 percent of the speed of light is far superior to anything we currently have on the books. This sounds too easy, and in many ways it is. Thus far all the superluminal warp drives require negative energy and pressure to form and maintain the warp bubble.Michio Kaku dubbed Alcubierre's notion a "passport to the universe." It takes advantage of a quirk in the cosmological code that allows for the expansion and contraction of space-time and could allow for hyper-fast travel between interstellar destinations.Essentially, the empty space behind a starship would be made to expand rapidly, pushing the craft in a forward direction passengers would perceive it as movement despite the complete lack of acceleration.Scientists speculate that such a drive could result in "speeds" that could take a spacecraft to Aplha Centauri in a mere two weeks even though the system is 4.3 light-years away!!!Results of his Alcubierre Drive rethink:Warp Field Mechanics 101 https://ntrs.nasa.gov/archive/nasa/ca... Warp Field Mechanics 102 https://ntrs.nasa.gov/archive/nasa/ca... http://www.nytimes.com/2013/07/23/sci... http://www.newscientist.com/article/m... http://iopscience.iop.org/0264-9381/1... http://100yss.org/ http://io9.com/5963263/how-nasa-will-... Clips, images credit: ESA/HUBBLE, NASA, ESO Wikimedia commonsMusic credit: Epic Unease by Kevin MacLeod is licensed under a Creative Commons Attribution licence ( https://creativecommons.org/licenses/... )Source: http://incompetech.com/music/royalty-... Artist: http://incompetech.com/

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NASA Warp Drive Project Speeds that Could Take a Spacecraft to Alpha Centauri in Two Weeks interstellar travel physicist Miguel Alcubierre space-time spacetime inside a warp bubble Michio Kaku faster-than-light travel
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