May 22, 2016
A group of researchers from Harvard University believes they have found enough evidence to support the idea that there is an ancient Earth existing inside out planet. By ancient, we mean at the time our planet formed, billions of years ago.
The team of researchers believes that a previously unexplained isotopic ratio from deep within the planet might be leftover materials from an ancient Earth prior to colliding with a gigantic celestial body that eventually lead to the creation of Earth’s moon. Harvard scientists believe that this could be the remnants of an ancient Earth that existed 4.5 billion years ago, before the collision mentioned above.
The creation of Earth’s Moon and its origin are among some of the greatest scientific mysteries of science. While we are still unsure as to how the moon formed, there are several scientific theories which attempt to explain the formation of Earth’s ‘natural’ satellite. Among the theories, the most widely accepted one suggests that the Moon formed some 4.5 billion years ago when our planet collided with a celestial object the size of Mars called ‘Theia.’ According to this theory, the heat generated by the cosmic collision melted the planet causing debris to fly off, eventually creating the moon we see today.
However, according to Harvard scientists led by Professor Sujoy Mukhopadhyay, there is enough evidence to suggest only part of the Earth melted and that an ancient part still exists within Earths mantle. In other words, this means that parts of the ancient Earth, before the formation of the moon still exist below our feet, untouched for billions of years.
“The energy released by the impact between the Earth and Theia would have been huge, certainly enough to melt the whole planet. However, we believe that the impact energy was not evenly distributed throughout the ancient Earth. This means that a significant part of the impacted hemisphere would probably have been completely vaporized, but the opposite hemisphere would have been partly shielded, and would not have undergone complete melting.” –Professor Mukhopadhyay.