posted on Jan, 28 2004 @ 01:07 PM
The reason I assume that the "aliens" would require some type of lifespan control is the amount of energy it takes to propel matter at even a
fraction of light speed. According to Einstien the amount of energy required to move one unit of mass is something in the range of 1,000 times its
mass conversion according to the theory of releativity. This type of power output is outside of our current realm of comprehension for an output of a
propulsion device. Theorists argue that given enough TIME you could propel a craft to near lightspeed with constanst acceraltion from a "reactive"
drive unit. But the time frame it would take and the runout distance is incredibly huge. Thus starting lets say from a a planets orbit considering
escape velocity etc. And an orbit velocity in the range of 28,000 miles per hour. And now the craft sets off for deep space it has to accelerate from
28,000 mph to 8,640,000 mph now you have to use the formula for mass and velocity and plug in your mass of the "alien" craft and your target
velocity (lightspeed) and your result is the amount of energy required to sustain the craft at that velocity. So now lets assume that the "alien"
drive unit has 2 times the push as the weight of the craft at x power input. But every time you time you double the velocity you have to quadruple the
input energy to maintain the new velocity.
That equals to 154 times the velocity doubles to reach lightspeed and 4 to the 154th power that the input power goes up over the original input
This is how many times the input power you would need to achieve lightspeed of a 10,000 lbs mass with a propulsion drive capable of producing 2x the
mass. ie 20,000lbs of thrust. Plug in your drive of choice and convert mass velocity to joules or watts and then multiple that by the above huge
number 4 to the 154th power and bingo you have the total energy to sustain lightspeed velocity of your craft. Now you have to factor in the the total
energy consumption for the duration of your flight at lightspeed. So if you were departing from a planet that is 45 lightyears away you have to
calculate your run up time to approach lightspeed which could be anywhere from 6 days to 100 years considering your drive type of choice and then the
remaining distance to travel at light speed converted back into jouels or watts per hour and the decay life of your drive materials. So considering
this you would need the power output of a small sun to drive your 10,000 lb craft at the speed of light over a distance of 45 lightyears. Simple
outside of the realm of possibility as we know it. This is why I would rule out the possibility of an "alien" craft traveling at the speed of light.
So therefore if the craft is traveling at 100th of the speed of light then multiple the light years by 100. So a 45 light year distance becomes 4,500
years etc. Way outside the lifespan of any organic living material that we know of today.
IF they are to travel to our solar system and the EBE is to survive the trip, then either A it has an incredible lifespan or means of slowing the
genetic clock or B must travel through some mechanizim outside of our understanding of the universe. or C there has never been another lifeform
(outside of bacteria) that has visited this planet in a spacecraft from another solar system.