Question: why is the solar system so BIG

Sarah Thomas answered on 24 Mar 2011:

Well i think it was the sheer force of the reactions that made the planets and everything, it was such a big explosion that it sent everything flying outwards and it all ended up really far away from each other.

According to recent measurements, it is believed that the big bang occurred around 13.7 billion years ago. There was a hot, dense phase in existence where suddenly a reaction occurred that lead to a chain of reactions, that lead to the birth of our universe. This is called the big bang. When this happened, the universe was tiny, high density, packed with temperature and pressure, and rapidly expanding and cooling. Approximately 1 /37th of a second later, there was a cosmic inflation and the universe grew exponentially. After the cosmic inflation stopped, the universe was a hot soup of plasma and particles. Temperature was around 1 billion Kelvin and the particles were flying around at massive speeds when SUDDENLY an unknown reaction took place and matter and antimatter was born. A few minutes later, neutrons combined with the first protons to form the first atoms of hydrogen and helium!