What if two planets collided with each other but their gravitational force kept them together? Could this be a new form of the Big Bang where they become one and life can still be formed?

While the idea of two planets colliding and forming a new universe might sound intriguing, it doesn't align with our current understanding of cosmology and the Big Bang theory. Let's break down a few key points:

The Big Bang Theory: The Big Bang theory describes the origin of our universe as a singularity, an incredibly hot and dense point that rapidly expanded, leading to the formation of the universe we know today. It wasn't the collision of two planets or celestial bodies that created the universe, but a highly energetic event on a cosmic scale.

Gravity in the Big Bang: The Big Bang theory doesn't involve the gravitational force keeping two objects together; it involves the rapid expansion of the universe from a hot and dense state. Gravity played a crucial role in the evolution of the universe, causing matter to clump together and form galaxies, stars, and planets over billions of years.

Planet Collisions: Collisions between celestial bodies like planets can indeed happen, and they can lead to significant changes in the affected planets and their surroundings. However, these collisions do not result in the creation of an entirely new universe; they are local events in our existing universe.

Formation of Life: The formation of life on planets is a complex process that involves a combination of factors, including the right environmental conditions, organic molecules, and time. While a planet collision could have profound consequences for life on those planets, it doesn't create an entirely new universe or guarantee the formation of life. In summary, the scenario  described doesn't align with current scientific understanding.

The Big Bang theory describes the origin of our universe, and it doesn't involve the collision of planets. Planet collisions are local events with significant consequences for the affected bodies but do not lead to the creation of a new universe or guarantee the formation of life.