Technology refers to the application of scientific knowledge for practical human purposes and environmental manipulation. It serves various functions for different people. Most households now have some form of technology like smartphones and computers that have become integral to daily life. Technology also fuels the educational system by advancing testing options and making grading and reports more efficient. It has improved communication both for business and personal use through apps. Technology additionally provides security for families and businesses through monitoring and data protection devices. Advancement in space exploration has also relied on technology used by NASA to discover new planets and monitor space.