The existing theory that planets in our solar system was formed when materials crashed violently is changing. The new studies suggest they were formed together by gently clumping together.
The new theory was deducted after the study of the object called Arrokoth. This object is more than six billion km from the Sun, near the Kuiper belt. It is a pristine remnant of planet formation in action as the Solar System formed 4.6 billion years ago, with two bodies combining to form a larger one. Scientists obtained high resolution pictures when NASA’s New Horizons spacecraft flew close to it just over a year ago.
The study of these images couldn’t find evidence of violent impact such as stress fractures and flattening due to squashing of materials.