At the very beginning, there was a giant big black hole which squeezed all the material parts. Due to its huge amount of gravitational force, the energy inside the black hole keep on increasing with time. And at last it blasted.
According to that theory, every planet, star, asteroids or any other interstellar things have created after that big bang only. Though there are no solid proof for this theory, but no other concept suits perfectly to the current situation of our galaxies.
Do you agree with this theory, that big bang really happened or is it another conspiracy theory?😏