Any form of research that takes place in space, or concerns any aspect of space or space travel

Research performed without regard to practical applications.

Research performed using the historical method.

Research performed through the summary, collation or synthesis of the results of existing research.

Research that involves the collection of previously ungathered data, rather than the analysis of that which is already available.

Research performed using the scientific method.

plural of scientific research

(US, politics, informal) Research into one's opponent's family, friends, and past, which aims to uncover activities or interests which embarrass or discredit them.

market research

The systematic scientific investigation of quantitative properties and phenomena and their relationships, using statistical methods.