Once Upon a Time, a Mars-Sized Space Rock Hit Earth, And Our Instant Moon Was Born

Not sure how many people out there know this, but our Moon is not just some random piece of space debris, forever captured by our planet’s gravitation as it casually passed by. It is in fact a part of Earth itself, detached from it as a result of a massive impact which occurred billions of years ago. It is then, scientists speculate, when a space rock the size of Mars, called Theia, slammed into our planet. What happened next is... (continue reading...)