As missions to the Moon multiply, keeping time there is no longer a theoretical problem. Researchers from the Purple Mountain ...

Fig. 1. Locations of samples returned from the Moon. Model ages of mare deposits [1] were based on superposed crater densities and the Neukum crater chronology [23]. The Moon had a much higher impact ...

A research team from the Beijing Institute of Technology (BIT) and Yinhe Hangtian has achieved a major advance in orbit ...