What is your take on extraterrestrial intelligences, have you seen "UFO"s , or even been in one if you lucky and caught by a surprise ? Have you met any people from other planets ? Or simply if you have not, what are your thoughts about the topic, and would you like to have an experience ?
Do you believe in the existence extraterrestrials ? (Belief is based on faith or trust without looking at the evidence, data, mathematical models, that is because your friend saw something, and you trust your friend, without research, that is belief)
Do you understand the existence of extraterrestrials ?
(Understanding is based on collecting data , evidence, mathematical models such as drake equation, astrobiology research etc and deriving a conclusion)
Do you know the existence of extraterrestrials ?
(That is when you have had your own personal experience, scrutinized it to be legitimate experience, as well as comparing your experience with other's evidence data and so on)
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No society will last long spending it's resources building and launching spacecraft that will never return.
I doubt they'll arrive on slow ships as tourists. All they need to do is send a little DNA and few gigabytes of programming in a speedy little bullet to get their things rolling down here.
"I doubt they'll arrive on slow ships as tourists."
Exactly my point, to be here as recognizable functional beings they would require slow ships.
The fastest thing that can travel interstellar space is a photon and it takes 100,000 years to cross our galaxy.
How fast do you think your little DNA packet can travel without being destroyed? What is the effect of gamma ray radiation (interstellar space is full of it) on your DNA? What will be your power source for your speedy little bullet? Programming for what?
Yes, good questions indeed. But I was hoping you would ask why it will be "DNA", and not some other, more advanced, self-healing form of genetic scaffolding. (Answer: I was keeping my explanation easier for people to absorb. I'm sorry, but the actual details are classified.)
The universe has a speed limit. That speed limit makes interstellar travel pretty much impossible.
Now let's see how long it takes the tinfoil hat people to start talking about traveling through wormholes or folding space. Maybe Doctor Who will reveal the technology behind the Tardis!
"or folding space."
Oh Shit! (smacks self in forehead) I completely forgot about "The Spice"...shit there goes my entire argument.
We just need "The Spice" and then we can go everywhere we want.
Warp drives (currently in development on this planet) and wormholes...
Are you talking Alcubierre's 1994 paper and Harold "Sonny" White's experiment at NASA???
That isn't even close to "...in development..." and White's experiment hasn't worked, no warp bubble yet.
You are aware that White's Warp Drive has to be built out of undiscovered "exotic matter", another name for undiscovered exotic matter might be doesn't exist exotic matter.
I'm all for doing experiments that sometimes lead to new ways of doing things, plastics for example.
Einstein-Rosen bridges (the proper name) are just a mathematical thought proposal at present, none have ever been observed (and they're tiny 10–33 centimeters).
Worm holes theoretically start and end at the center of black holes, don't they? How can anything that gets scrunched down into the singularity, after being spaghettified (=torn apart and destroyed) on the way down, come out the other end in any sort of recognizable form?
Uhm, you do know that the 'vortex propulsion' is just a plan for an airlift transport, right? That it has nothing to do with bending space or time?
Here is another video in which he applies his research to launching children's toys - such as a top and a teddy bear.