origin of our solar system
... The beginning of the Cosmic Origin began with the observation of the entire Universe expanding. ... Our Solar System formed about 4. ... The cloud that gave birth to our Solar System was about 98% hydrogen and helium and the other 2% contained all other chemicals. ... The distance to the stars compare to the distances within our Solar System because the speed of light is 300,000 kilometers per second. ... For example; the brightest star Sirius is about eight light years from our Solar System meaning that it takes light from Sirius eight years to reach us. ... 9% of all the mass in the Solar System.