What type of research attempts to expand the frontiers of knowledge but is not aimed at a specific, pragmatic problem?

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Basic research is focused on expanding the frontiers of knowledge and understanding a concept or phenomenon, without having a specific practical application in mind. It is also known as pure or fundamental research. Applied research, on the other hand, is focused on solving a specific problem or meeting a practical need. Technological research is a type of applied research that focuses on developing or improving technology. Data-mining research involves analyzing large datasets to extract insights and patterns.

What Type of Research Attempts to Expand the Frontiers of Knowledge