I love how the majority of you are envisioning aliens as these great beings with light speed and ninja skills.
Sending out 'signals' to other planets in search of life only covers a very small fraction of the life that could be out there. These 'signals' are only targeting civilization with technology powerful enough to interact with these signals.
Not even that, but civilizations with technology to parallel ours. It could be an entirely different story; the technology of other life forms in different locations in space are either too primitive to translate and receive signals, or too advanced to even have a use for signals.
As far as the physical side of it goes; Carbon is not man made. Therefore, I believe the logic of it would be that carbon could be anywhere in the universe. Therefore, more times than none, there could be a lifeform that is similar to ours, in that it is carbon-based.
Taking atoms apart and then putting them back together would be physically impossible.
When you make paper, you put atoms together, essentially. When you rip paper, you take them apart, essentially. To a certain degree. Splitting atoms and taking atoms apart are two entirely different concepts. However, the basis of both could be used in whatever type of 'teleportion' you're talking about.
There IS most definetly life out there, but we will probably never find it, and by the time we do we'll be dead. The signals sent to other planets would take years to reach, by then we'd probably have evolved into a different species altogether. No record would be made and the aliens could only reply or come, either way it'd be thousands more years.
I might be mistaken, but didn't our kind already discover worms on Mars? As well as wood?
Space exploration is the equivalent to a very well detailed racing game. There are few factors.
The car.
The fuel for the car.
The strength of the car.
The dynamics of the car.
The driver.
@Mahtale –
What!?!?
If I ran 186,000 miles out in one second, and then ran it back in the next second, arriving at the stop I had originally started from, it would be the same time, plus 2 seconds. Time will not have stopped. I will not have aged no more than 2 seconds. Simple.