Everything is possible till completely proven impossible.

Can fly to the moon see the moon is made out of cheese and take some cheese back for your mum? Well yes and no. It is possible that the moon is made out of cheese and you can fly up there and get some cheese for your mother. Is it likely? No it is very unlikely. But if you can think it is it possible. Science shows us only what can put into a theory based on events that have already been seen. Drop an apple see if drop, everything drops down so gravity is born. A theory based on an event that happened. How can something be dropped and not go down then. Well there are two solutions one agrees with science kind of and that is some gases such as helium cause objects to not drop. Science explains it but could be wrong. The second is a miracle.

Miracles cannot be possible because they do not agree with current science. Well for us to completely believe in something 100% we should know everything about it. If this world is created by god and god knows everything then he should know the answer.

Let us show it from another point of view. If the apple was filled with helium the apple would not drop. Would gravity still exist? Let us make another example, spontaneous remission is a medical term for when a recovery is caused by an unknown reason or cause. This is not a miracle just something current science cannot explain. So what if you was to now be able to fly to the moon and get some cheese and bring it back and give it to your mother. That would be an unexplainable event in current understanding, but have to be possible because he happened. Science would try and most likely work out a reason for it happening.

The moral of this story is just because it has not happened does not mean it cannot happen. The more seemly crazy the thought, the more unlikely but not any less possible, for past events cannot predict the future every time.

Spontaneous remission report, http://discovermagazine.com/2007/sep/the-body-can-stave-off-terminal-cancer-sometimes
A quote from Wikipedia about the above story:

A published example of unexpected spontaneous remission is that of John Matzke. At 30 years old, he was diagnosed with malignant melanoma in 1974. A chest tumour and lung cancer were found in 1984. Instead of undergoing immediate treatment, he spent one month hiking, meditating, and eating healthily (to prepare his body for treatment). Surprisingly, upon his next X-ray appointment, the tumour had disappeared. He lived for another seven years before the cancer recurred in his brain and took his life on November 8, 1991.

http://en.wikipedia.org/wiki/Spontaneous_remission
This story is quite basic but if he prayed religion may blame it on god, he was told he would recover science may blame it on a placebo. The answers are not clear and only possibilities are available.