From: kymhorsell@gmail.com   
      
   On Monday, April 17, 2023 at 4:15:57 AM UTC+10, Skybuck Flying wrote:   
   > Hi,    
   >    
   > I agree that Avi Loeb does not know everything, though his oppinions on this   
   matter are somewhat interesting in the way he tries to apply known physics to   
   this matter.    
   >    
   > However I also see some potential short comings in his knowledge/paper.    
   >    
   > As far as I know there are bacteries that can survive x-ray and radiation.   
   So called "resistent bacteria", very hard to kill if not impossible.    
   >    
   > So I suspect that this paper is wrong on that assumption that biological   
   matter could not reach earth.    
   >    
   > I can also vaguely remember signs of bacteria found on asteroids/comets or   
   something or maybe building blocks for such things.    
   >    
   > The idea that something may have dumped biological organism into our ocean   
   to grow monsters here is kinda cool and funny and creepy at the same time.    
   >    
   > I am now probably going to watch a creepy movie called Aliens vs Kids...   
   maybe Kids will save us from Aliens ! LOL.    
   >    
   > It's probably a low budget movie I don't expect to much from it... maybe I   
   will watch it another time, because it's getting dark and I want to sleep well   
   at night.    
   >    
   > This movie kinds gives me the creeps, I saw some preview of it... monsters   
   attacking kids during a party... lights in the back of the aliens, only see   
   silhouts at first... later creepy mouths like big worms...    
   >    
   > But could be fun... but I think I will pass for tonight... I am not sure yet   
   lol.    
   >    
   > I might give it a try lol, not sure lol.    
   >    
   > Concerning ukraine... maybe they just trying to attract attention to their   
   war situation.    
   >    
   > Concerning avi loeb/paper he might be trying to get some money... but I also   
   get the sense he is somewhat serious about this.    
   >    
   > Probably a double edged sword ;)    
   >    
   > It also reminds me of transformers the movie/all spark and conquest frontier   
   wars a computer game.    
   >    
   > In the first movie, the all spark reaches earth or something... maybe some   
   valuable object has hit earth and aliens trying to find it.    
   >    
   > In the second, a computer game on set of aliens/race is fleeing from other   
   aliens... kinda funny.    
   >    
   > One big fat point remains from this paper... if Oumuamua did eject probers   
   then this could explain it's excelleration.    
      
   I'll post something on Oumuamua shortly.   
   I hadnt looked at it before. Since it was discovered only in 2017   
   and supposedly came from outside probably only a few years before that   
   it didnt seem strongly connected with UFOs that have been around   
   la least since the 1950s and we all suspect a lot log longer than   
   that.   
      
   But SHOCK! It turns out the data shows there *is* a connection with UFO's we   
   see reported here on planet Dirt. While it doesn't seem they are the origin of   
   any UFO's there is some evidence that UFO's may have gone to visit it.   
   Anyway, I'll post that in a couple days.   
      
   As for light sails -- don't count them out. They are a step up from our   
   current chemical rockets because they dont need to carrry their own fuel or   
   energy.   
      
   There are basically 4 kinds of Newtonian ("push against something") rockets   
   called EE, II, EI and IE. The 2 letters specify where the fuel comes from   
   (Internal, or External) and where the energy to accelerate it comes from.   
      
   The limitation of chemical rockets is both the fuel and heat needed to push it   
   out the back so the rocket goes forward both come from inside the ricket. This   
   limits how fast the rocket can go because ... eventually the gas tank runs dry   
   and the ricket    
   stops.   
      
   But if both things come from outside then it doesnt come to an end. The rocket   
   can accellerate for much longer -- maybe "forever".   
      
   So light sales keep working as long as there is light around. Even between the   
   stars there is *some* light. And small light sails can be boosted by banks of   
   mega lasers powered by solar energy e.g.   
      
   Some groups are trying to plan a "star shot" (involving Avi Loeb again :) that   
   propose to accelerate a very small probe -- just 1 g or so -- using a big   
   laser and get it up to 1% or 10% of the speed of light.    
      
   We have no way to do that with chemical rockets.   
      
   An even more interesting idea being carried out by another "fringe science"   
   group is about to test another EE rocket in space. This rocket tries again to   
   be EE -- it uses solar power and an "EM drive" to propel itself. They say the   
   EM drive works and has    
   been verified by independent groups. There is maybe a question over this. But   
   if they get it into   
   space and show that it works then it would be a big breakthrough. The math   
   involved in the EM drive proposes that very very tiny accelerations are more   
   efficient than big ones and can eventually get up to a good fraction of "c"   
   with the least effort due    
   to a quantum effect. In a way their rocket supposedly can "quantum tunnel" to   
   high speed travel.   
      
   Their theory also explains why stars in galaxies all seem to rotate around the   
   centre at the same speed   
   instead of getting slower toward the edge like you might expect. Some   
   scientists propose this is caused by a hidden "dark matter". But the rocket   
   people    
   propose it is a quantum effect that will not let acceleration be 0 no matter   
   how little you push.   
      
   > The gravitional swing around block holes is cool.    
   >    
   > Using rockets and water as fuel was amuzing... light sail a bit slow...    
   >    
   > I do agree avi loeb might not consider the possibility of aliens being far   
   beyond our "laws of physics" ;)    
   >    
   > Bye for now,    
   > Skybuck.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)