Excuse me, evolution has no mechanism.
You are wrong. You are excused.
The mechanism of evolution is natural selection. This mechanism makes it more likely that later generations of a population will keep those characteristics of the organism that give it greater fecundity and lose those that reduce its fecundity. This tendency has been directly observed in the natural world, and is accepted even by most cdesign proponentists.
Evolution is only a theory, has only ever been a theory...
To say that it is "only a theory" displays a common misunderstanding of the nature of science. Everything in science is a theory, to be kept or discarded as the evidence dictates. Evolution is a theory in the exact same way that gravity is a theory, or the germ theory of disease is a theory.
...and scientifically is being dismantled year on year.
Please give one example of this dismantling.
Trying to explain it is such a problem that mainstream scientific literature even considers the possibility of life dropping in from outer space, called the theory of "panspermia"[.]
This, again, is simply wrong. First, panspermia refers to how life began. Evolution is only concerned with how life changes over time once it has begun. Second, scientific literature may consider the theory, but it certainly hasn't been firmly adopted by anyone as being the only or even the best explanation for how life began.
If we are to really discover truth, we must examine.
Well, at least you got something correct. Now we shall see whether you are willing to examine, or whether you came here to simply spout inaccuracies then run away when they are challenged.
Those who would sacrifice an essential liberty for a temporary security will lose both, and deserve neither. -- Benjamin Franklin
We see monsters where science shows us windmills. -- Phat