The moon has a surface gravity of around 1.62 meters per second squared, according to NASA. In comparison, the Earth has a surface gravity of approximately 9.8 meters per second squared .

Dr. Janhunen may have found a solution, though. He studied the known lunar gravitational anomalies found by GRAIL. This satellite mapped the moon's gravity in great detail and found several places ...

In Hudson Bay, this downward pull reduces the area’s mass, creating a weaker gravitational pull, thus causing the gravity anomaly scientists first noticed in the 1960s. In 2002, satellite data ...

However, this only accounts for around 25-45 percent of the gravity anomaly seen at Hudson Bay, according to an analysis of the Gravity Recovery and Climate Experiment satellite data. The ...