Today's era is called the era of science and technology, and in this field we are also making progress at a rapid pace. To make our life happy, the scientists are also developing new technologies day by day, but are we happy? Considering the modern technologies, has science given us such a technology, which has no adverse effect? This means that we are doing mistake somewhere. A mistake, which I found is that we have not understood the physical science deeply. Technologies based on incomplete physics can never give happiness. When a scientist invents a technology, does he think about its adverse effects? His vision remains always one-sided. This is the reason that currently no technology is totally harmless. Modern science is surrounded by many serious problems today. Regarding theoretical physics, except for the experimental verification of few principles, which were predicted about 50-100 years ago, no major research work is done in the last 70-80 years. We want to understand every process of creation through mathematics, but seriously consider, is it possible? Can we explain all the processes happening in the universe through mathematics? Mathematics is merely a language to explain our thoughts. If we can’t make understand any theory through mathematics, it doesn’t mean that it is not science. For example, we can’t explain the process of tree formation through mathematics, then how can we think of knowing such a complex universe through mathematics? There is also a limit to such experiments and observations. Which we can’t detect, it doesn’t mean that there is no existence of that thing. If we want to know more about the Universe, then we have to come out of the boundaries of mathematics and experimentation, otherwise, our life will be ended in solving some equations. All well-known scientists have believed that there is a power that has made the world, tied in the rules and operating it, then why we hesitate in thinking about it? If a person like Acharyaji wants to help us to get rid of these problems, then we don’t take it seriously by saying philosophy or egotism, is it fair? I think that this is not fair, we should be ready to listen to every thought, which can be helpful in making progress, which can protect our wealth, time, hard work etc., by giving up our every kind of prejudices, otherwise our life will end without making any notable progress. Acharyaji, through this booklet, has done the task of showing a new path to science students and enlightened people, by doing the correct definition of science. Along with this, he has suggested to give answers to the serious questions given in the end of this booklet in a conference in near future through Vedic science. Hope you will read this booklet and understand the meaning of 'What is science?'