NASA space probe OSIRIS-REx finds water on asteroid Bennu
NASA on Monday said that data obtained from probe OSIRIS-REx has revealed the presence of water locked inside clays that make up asteroid Bennu. The spacecraft's two spectrometers revealed the presence of molecules called hydroxyls. OSIRIS-REx, NASA's first-ever asteroid sample return mission, reached the asteroid on December 3 after flying around 2 billion km in over two years. 