The new explanation suggests that giant, sinking slabs of titanium could have jump-started the moon's magnetosphere.
Archaeologists in Saudi Arabia have discovered 4,500-year-old "funerary avenues" alongside thousands of pendant-shaped tombs.
Science is a systematic and logical approach to discovering how things in the universe work.
A scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it.