Thank u @sallybeth23 😚😚 one theory is thay the moon is a sister planet that formed next to Earth. However, this theory does not explain the missing metal core, and then another theory states that the moon formed in a part of the solar system poor with metals and that it was trapped in orbit around Earth later. This theory, however, collapsed when the same oxygen isotope ratios were found on the moon as on Earth and third, perhaps a little bit crazy idea, says that the Earth was spinning so fast that it threw away the part of the mantle that formed into the moon 😁 so who knows 😁 maybe in few years we will know the truth ;) I'm so busy this days with school, I'm not having time to write articles:( but in 2 weeks I'm doneee 😍😍 love and kisses ❤❤❤