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posted by takyon on Friday May 01 2015, @06:00PM   Printer-friendly
from the newtons-per-kilowatt dept.

An article at is claiming that the superficially reactionless EmDrive has again been tested at NASA Eagleworks, this time in hard vacuum, and the anomalous thrust is still being detected:

A group at NASA's Johnson Space Center has successfully tested an electromagnetic (EM) propulsion drive in a vacuum – a major breakthrough for a multi-year international effort comprising several competing research teams. Thrust measurements of the EM Drive defy classical physics' expectations that such a closed (microwave) cavity should be unusable for space propulsion because of the law of conservation of momentum.

With the popular explanations of thermal convection or atmospheric ionization being ruled out by operation in vacuum, and thrust thousands of times greater than expected from a photon rocket, is it time to start taking the EM Drive seriously as a fundamentally new form of propulsion, and possibly a door to new physics?

Roger Shawyer, the inventor of the EmDrive, claims that the device's efficiency will scale even further with greater levels of power, potentially enabling fast interstellar travel powered by a radioisotope thermoelectric generator or nuclear fission.

Previously: NASA Validates "Impossible" Space Drive's Thrust

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  • (Score: 4, Insightful) by ikanreed on Friday May 01 2015, @06:07PM

    by ikanreed (3164) on Friday May 01 2015, @06:07PM (#177546) Journal

    I'm more inclined to trust this blog post than the last blog post, but I'll be waiting on the peer reviewed paper too.

    The whole mysterious universe site's background levels of bullshit put this story on my bullshit radar, and it's not going away for a while. This new website is an amateur community, which is more reasonable than "batshit conspiracy site", but not up to the level of actually credible.

    Anyone got a genuinely reliable source yet? Big science news like this seems like it would have some sort of official channels to put out.

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  • (Score: 5, Informative) by SubiculumHammer on Friday May 01 2015, @06:21PM

    by SubiculumHammer (5191) on Friday May 01 2015, @06:21PM (#177552)

    I mean, this white paper posted in 2014 on the official NASA site at least suggests that NASA doesn't automatically reject all this as quack science. []

  • (Score: 2, Informative) by khallow on Friday May 01 2015, @07:13PM

    by khallow (3766) Subscriber Badge on Friday May 01 2015, @07:13PM (#177568) Journal
    If you're referring to, that is a professional news source for manned space flight news, particularly stuff that comes out of NASA. And there's a number of aerospace and NASA employees on the forums.
  • (Score: 5, Insightful) by wantkitteh on Friday May 01 2015, @08:26PM

    by wantkitteh (3362) on Friday May 01 2015, @08:26PM (#177602) Homepage Journal

    I don't think it's a question of finding a genuinely reliable source - there's been a few of those already that have said this thing works. What we appear to have is a genuinely extraordinary claim that's holding up against the expectation of genuinely extraordinary proof. So far. And let's hope it goes all the way!