Why are US, Russia and China racing to put nuclear reactors on the moon?

The United States, Russia and China are racing to build nuclear reactors on the moon, as scientists warn about the possible risk of a radioactive mishap. In January, NASA, the US space agency, announced plans to develop a nuclear reactor on the moon by the end of 2030. Russia, working with China, aims to do the same by 2036 as they strive to advance space exploration. The reactors will be needed to power mining of frozen water trapped deep in the moon’s craters, which scientists believe could supply drinking water, air, and rocket fuel for future bases. The reactors would also provide power for lunar bases.