Astronomy and space exploration

Discussion in 'General Discussion' started by eloyc, Apr 10, 2017.

  1. BRiT

    BRiT (╯°□°)╯
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    Gonna need more Hot Pockets.
     
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  2. hoom

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    BTW SpaceX seems to have had a catastrophic failure of their capsule while testing the rockets.
     
  3. eloyc

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    Yes, please! :yes::cool2:
     
  4. eloyc

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    Again!? :cry:

    EDIT: oh, I guess you mean what happened the other day, not a new disaster.
     
  5. hoom

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    Yeah the one the other day.
     
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  6. Davros

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    Beware of snake oil salesmen
     
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  7. hoom

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    Rocketlabs had a scrubbed launch today, gonna try again tomorrow.
     
  8. eloyc

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    I didn't know them.
     
  9. cheapchips

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    Rocketlab seem to be doing a great job of building a good smallsat launch business. The market is going to get really crowded over the new few years. They look to have one of the better chances of surviving when the market heats up.

    + Their launch site in NZ has a really nice lawn.
     
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  10. hoom

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    Rocketlabs is the company that makes Electron.
     
  11. hoom

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    Success on take2
     
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  12. eloyc

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    https://www.space.com/blue-origin-blue-moon-lander-explained.html
     
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  13. nutball

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  14. eloyc

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    https://futurism.com/test-emdrive-breaks-laws-physics

    Wasn't that already debunked? ¬_¬
     
  15. pcchen

    pcchen Moderator
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    Of course it can not be completely "debunked" as people are always trying to make more experiments. It's not a bad thing though, as it'd be very useful if such thing is actually possible (and opens up a huge possibility of discovery of new laws of physics). However, based on the results of previous experiments, it's very likely that the so called "EmDrive" is not a real effect, but a combined effects from its surrounding environments.
     
  16. eloyc

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    IIRC, the last "big" experiment found out that heat made copper expand a bit and that may explain the "thrust".

    The experiment from which I actually expect something is the one from these guys: https://www.facebook.com/SWarpDynamics/

    I've shared it here sometimes. Do you know it?
     
  17. Davros

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    Really? the EM drive seems more realistic to me
    EM drive = creating a tiny amount of thrust
    SWarpDynamics = warping spacetime

    weve measured examples of spacetime being warped it took the collision of two neutron stars to do it
     
  18. pcchen

    pcchen Moderator
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    Well, technically any amount of energy can cause the spacetime to warp (otherwise there'd be no gravity). On the other hand, as you said, it'd take a huge amount of energy to create a warp large enough to be useful.
     
  19. 3dilettante

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    Various attempts at testing the EM drive did claim certain measured results, but with significant caveats like odd choices in setup, measurements at power-up or non-steady state thermals, measured thrusts in directions other than where they were supposed to be, thrust amounts not consistent with their supposed mechanism at or near the noise floor, and difficulty isolating from equally minor factors like wiring interacting with the Earth's magnetic field.
    Some of the most recent articles I've read on EM tests showed whatever the latest claimed amount of thrust went away once the torsion bar was corrected and/or more of the device was shielded from external magnetic fields.
    That kind of shielding isn't cheap, so the most recent setup that didn't register a detectable thrust wasn't totally shielded--just more shielded than the setup that supposedly generated its own thrust.

    Even with warping space, utilizing it for movement requires some level of being able to consistently generate a warped region outside of a propulsion device, or asymmetrically. Warping space in a region that symmetrically surrounds you and doesn't move without some kind of displacement of matter or energy out of the area is just having mass.
     
  20. eloyc

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    Well, I'm not an expert, but if some of you are more knowledgeable with this stuff, I would like you to visit their Facebook page and website: https://www.spacewarpdynamicsllc.com/

    You can read about the theory and the experiments they already have done. On their Facebook page they recently explained how their place was vandalised when they were just about to perform and show their latest experiment with more weight. Perfect timing? I don't think so, since they already have shown the same experiment with less weight, published a paper, been to interviews and even on a scientific conference. They seem quite humble, as well. They may be onto something... or that's what I hope! :mrgreen:
     
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