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Jacke

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Everything posted by Jacke

  1. You've actually measured the index of refraction of air, as the speed of light is slightly lesser in air than in a vacuum.
  2. MechJeb (and Kerbal Engineer) can be used partless. I have my own ModuleManager file to add the MechJeb module to Command parts. There's also this mod.
  3. @AtomicTech, I strongly suggest you drop the moving GIF text boxes. The motion and colours are distracting and draw attention away from your great screenshots of the missions. Go with static text, even at a larger typeface if you want. As well, I suggest using only one spoiler to contain all the screenshots. Having to interact beyond scrolling and pop open even more spoilers is a bit tedious and distracting.
  4. That's a strange Whyte Notation for the Hype Train Locomotive.
  5. Sag A*'s gravity is near constant across the whole solar system. It's the differences that matter.
  6. I either post links to Imgur galleries I make or on the individual images click Copy on Direct Link to get something to add to a post that embeds the image.
  7. It's horrible how bad Internet service is in North America. Compared to most of Europe or even worse South Korea, it's damned stupid.
  8. Considering the competition, 5G and ground fibre, with better latency and cheaper capital and operating costs, I'd say Starlink is going to strongly challenged and likely to fail.
  9. We've had this argument before. The light-polution impact of very nearby LEO satellites is many orders of magnitude much greater than any mass of bright objects--even fusion torches--much farther away, AUs away. Starlink is ruining astronomy and threatening Kessler Syndrome now. And any significant space travel except for exploration is a century or more away. There is no business case to pay to launch much more mass to orbit than is going up now. Any transformation from this is going to be rather slow. Even getting consistent funding for the reasonable exploration that can be done now is going to be hard enough.
  10. Considering what we know already about significant threat asteroids, if we keep up observations and find one with the near-passage probability ellipse enclosing Earth, said near-passage will be several orbits away. And we could send out the heaviest probe and just have it station-keep besides said asteroid to perturb that near-passage ellipse away from Earth. That method works despite the consistency of the asteroid, while all other methods have a lot of risk of not removing all of the asteroid's mass away from that near-passage.
  11. Fighters have used for a long time mostly low-bypass turbofans. The Harrier's Pegasus engine was a turbofan as well, with the fan powering the front 2 nozzles and the engine core the rear 2.
  12. Steam says I've played KSP for 562.7 hours. But early on I started copying KSP from the Steam download directory to another and using copies launched the executable directly. I expect my actual play is somewhere in the 1000's.
  13. Seismologists now use the moment magnitude scale.
  14. With low metallicity, the Jeans Mass, the minimum mass of a particular interstellar gas cloud that will collapse, goes up. The metallicity effect is not mentioned directly in this article: https://en.wikipedia.org/wiki/Jeans_instability but I remember it well from long ago astrophysics courses. This would affect both stars and their planetesimals which form whatever planets they have. Also, as gas clouds collapses, the Jeans Mass drops, so clouds will fragment, causing multiple stars and planetesimals to form.
  15. Only with the added hardware and software providing the data to turn them into an astronomical interferometer.
  16. Pretty picture, but the JWST would never take such an attitude. The mirror is always in cold darkness.
  17. Films with Tom Cruise have him do his own stunts as well as run a whole lot.
  18. But would they merge? If they are rotating faster than they are revolving (as with the Earth in the Earth-Moon system), then the advancement of the tidal bulges tends to accelerate things, having the Moon recede. If they are revolving faster than rotating, then it would be reversed and would proceed to eventually merge. So, how fast do they rotate? Is it faster than they revolve?
  19. That's because that 747 just had usual weather radar. Not sure, but I think radars could be designed with a different frequency to maximize detection of volcanic ash, perhaps even part of a multiband weather radar.
  20. So you go up by increasing the buoyancy? Cool!
  21. Wow, 3 Junos and a Panther! That craft must have parts clipped together like crazy. How did you get it to move underwater?
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