The nearest star system (Proxima Centauri) is slightly more than 4 light-years away from our sun.
Therefore, if our Sun were the size of a golf ball and was placed in Chicago, Proxima Centauri would be a ball bearing in Washington DC. and the Earth would be a pin prick orbiting 20 feet from the golf ball sun. The next nearest star system would be somewhere in Merry Ole' England.
Consequently, at this scale the speed of light would be equivalent to walking from Chicago to Washington D.C.
Note: For those of you in Europe. Substitute Rome, Istanbul and Mongolia for Chicago, Washington and England.
The point is...space isn't huge. It's bigger than huge. It's unbelievably, unimaginatively huge. And the time it takes to span its' distances is even more exponentially, unbelievably, unimaginatively bigger than that.
What we know...
- Unless you have zero mass or infinite energy, traveling at the speed of light is impossible
- The universe is homogeneous. This means that every where you look, the universe follows the same laws of physics that our own region of space has. And so, the above restrictions would also apply to the aliens as well.
- I think we can safely assume that any alien craft would have more than zero mass and less than infinite energy and so can only travel at a fraction of the speed of light
- Therefore, any alien craft traveling to our system from a nearby star would take decades to get here. And if they were coming from someplace even 20-30 light-years away, you're talking about a trip of well over a hundred years if not centuries. Any farther than that and it would take millennia (plural)
- There are three categories of technology that a civilization can possess. It can have the technology level of exploiting the energy resources of a planet (our current level), a solar system and a galaxy.
- In order to travel even at a significant fraction of the speed of light, a civilization would most likely have to have the second level of technology (exploiting the energy resources of a solar system)
- Finally, the only way to travel faster than light speed (i.e., breach the laws of physics and utilize worm-holes, warp speed etc.) would most likely require the third level of technology (exploiting the energy resources of a galaxy)
Now. Are you telling me that some of you truly believe that aliens, who must be in possession of a technology that at the very least can exploit the resources of an entire solar system: traveled across the endless reaches of space for decades (if not centuries) and with all of that fantastic power at their command...one of the first things they do when they get here is crash into a field outside of Area 51...or they spend most of their time kidnapping poor unfortunate farmers so they can analyze their rear ends?
Space is just too big and the mechanisms required to get here are far too powerful for me to believe that aliens are actually capable of coming all the way here: but are completely powerless to either avoid crashing into a planet or evade being captured by a circa 1940's US government. And don't you think they might have better things to do with their time than forcibly examine our posteriors?
Besides. I live in the USA. And I know for a fact that that my government is barely able to deliver the mail properly, let alone out-smart an alien civilization with (at least) a 2000 year head start on them.





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