Answer: According to the big bang theory, the galaxies, the solar system, the planets, all started from a single point, commonly known as the Singularity. From that point, the universe is continuously expanding and this is the reason why the galaxies, and other distant galaxies are moving further. The space itself is expanding more and more with time.
Public debate takes place mostly through the mass media, but also at meetings or through social media, academic publications and government policy documents.
