1 year ago
Last edited at 2:31PM on 9/6/2012
The solar system began as a rotating cloud of gas and dust that contracted under its own gravity. The solid matter came together over time through collisions and, again, gravity. When enough hydrogen gas accumulated in the center the Sun ignited its thermonuclear reactions in the center, blowing away most of the remaining gas. The inner planets, including Earth, were in a region too warm to retain most hydrogen gas, and so are rocky. The outer planets were beyond the "frost line," and were able to hold onto such gasses as hydrogen, helium, methane, ammonia, and water (the last frozen as ice). So they are much larger and gassy and/or icy (many of their moons are mostly ice). Earth continued to be bombarded with materials until it reached its present size. It is thought that one of those bombardments was with an object so big it knocked off enough material to form the moon. And to the religious who answered, this does not violate your faith. The bible may say that God created everything, but it doesn't say HOW. The question was "how?" This is science's answer. And btw, I'm an astronomer.
2 eggs 2 cups of flour 1 cup of sugar 1 stick of real butter Mix well in mixer Roll in blue, green, brown, orange, red, yellow bits of food color. Form into a ball with a slight ellipse. Throw it into the air and yell "BANG" and see that it was good...The End