The best you can hope for from scientific evidence is to see that the science does not disprove the miraculous.
Let’s put our CSI unit on the scene of the resurrection. We give them all of their modern equipment and free access to Christ before and after the resurrection.
They could confirm that Christ was alive. They could confirm that he died on the cross. They could confirm that 3 days later a man with the same DNA was alive.
What they could not tell us is how or why.
Our CSI unit could not “prove” it was a miracle they could only confess that they have no scientific explanation for the facts at hand. (Granted this would “prove it” for me, but I’m easy.)
Even if they were actually in the tomb and witnessed the resurrection itself there are those who would submit to you that they must have been tricked somehow.
In fact I’ve posed precisely this question to some of the atheists on the site before, “If you witnessed the resurrection, then would you believe?”
“No, at that point I would have to question my sanity……”
“Perhaps he had an identical twin that took his place….”
“Perhaps he took a drug that made it appear he was dead….”
Etc. etc.
Closer to the subject at hand would be something like this
http://www.zenit.org/article-12933?l=english.
Let us assume we put our CSI unit on site. They inspect the bread and wine, take samples, witness the monks actions and take samples of the flesh and blood.
Now our Atheist friend chimes in again.
“What about slight of hand. The monk obviously inserted the heart tissue without the observers noticing.”
Etc. Etc.
The CSI observer could testify to what they witnessed, but they could not “prove” the miracle.
The miraculous is scientifically “impossible” after all. Isn’t it?
Unfortunately, the Miracle-meter is still waiting in line to be invented with the Christ-meter so the we can validate the presence of the true Substance of the Eucharist.
Chuck