Scientists look for data. The data are acquired by measurements, and measurement are possible only with physical equipments. So for them to search for God, they can only consider the physical world, since they cannot do anything with the spiritual world. So far, nobody can perform scientific experiments on the spiritual world, so, I think, they choose to ignore it or just lump it under ‘a form of energy’ which they cannot even prove or define. Therefore, we can see that scientific approaches to find God are very limited in the scope (only physical world) and the capabilities (tools and laws they think they can use).
Now look at the subject they are trying to tackle: God.
By definition, God is the creator of everything in the universe, seen and unseen (scientist knows that there there are things they cannot detect yet. Example, what they called ‘dark matter’), and all the laws that govern the universe. Note that the God is also the creator of time, a component of the universe, and is not restricted by it.
A true scientific approach will have to include two components: 1. To prove that God exists. 2. To prove that God does not exist. Sadly, even with the ‘physical’ world that they can do something about, they cannot prove anything in 1 or 2 above is true or not true. The reason is, even if they can ‘explain’ any physical laws, phenomenons, matters, or, with mathematics, they cannot explain why those ‘truths’ exist in the first place. Yes, E=mC*C, but why is it this way? Yes, there was a big-bang, but why did it happened. How can such huge amount of energy be stored in a tiny atom? Understanding is just a discovery, and nothing else. Our human intelligence is only limited compared to the Creator of the universe Whom some of us claim does not exist. Since we are part of the creation, created in the image of God at best, does not equip us to ‘prove’ or ‘disprove’ God.
Unfortunately, science, for some of the human race, is the best tool they can use to describe God; but yet, the tool itself is so hopelessly powerless. To conclude anything about God with science is laughable.
A scientist proudly displays the life form he created and says: See God, who needs you? And God replies: “Use your own dirt”.
Praise be to God!