<prompt> Lefatše le lilemo li kae?nan  <response>: Instruction in English: How old is the Earth? . Response in English: The Earth is estimated to be about 4.54 billion years old. This age has been determined through radiometric dating of rocks and meteorites, as well as computer modeling of the Earths formation. . Response in Sesotho: Lefatše le hakanngoa hore le na le lilemo tse ka bang limilione tse likete tse 4.54. Nako ena e lekantsoe ka nako ea radiometric ea majoe le meteorite, hammoho le mohlala oa khomphutha oa sebopeho sa Lefatše. 