The Big Bang theory is currently the most accepted model we have of how the Universe began.
The Big Bang Theory
How Theory Has Changed Over Time
Evidence for the Big Bang Theory
Big Unanswered Questions
Gravity allows stars to form and depending on how big they are, they can end up as either white dwarfs, neutron stars or even black holes!
Star Life Cycles and the Size of the Sun
Life Cycle of Supermassive Stars
Creation of Elements
Observation of Stars
Our Solar System contains planets, comets, asteroids and moons all orbiting the Sun, although its taken a long time to accept this model.