You're right that Big Bang Theory did not produce the earth. In fact, no one knows what a Big Bang produces.
What is funny is that scientists have understood the big bang by working backward in time. They asked where the stars came from when the universe was much smaller, then they go to an even smaller universe and ask where did the atoms that make up the stars come from in a very early universe, then they ask where the particles that make up the atoms come from. Another question is where did the energy that produced matter comes from and was this energy produced directly from the big bang or was it produced by another product of the big bang.
We really don't know what a big bang directly produces because even though we know about the universe moments before the big bang, we do not quite know about the very instant of the singularity. The closer to the moment of creation that we go, the more speculation is involved because we have less information.
Why we don't know that it produces matter. Some believe that it produces matter without scientific evidence; however such beliefs begs the question: What cause a Big Bang to produce matter from nothing. That is pure nonsense; worse than any mythological story.
A good theory is that the matter and anti-matter in the universe were produced from energy when the universe was very small and very hot. Using particle accelerators we know that this does happen at very high temperatures. We also know that matter and anti-matter can conversely be turned back into energy by putting them together. Einstein's equation e = mc^2 shows a relationship between matter and energy.
Also, a Big Bang of matter will not produce any ordered patterns like individual gravity and its related orbit(s). That is pure speculation without scientific proof.
The big bang does not produce orbits, the gravity and motions of particles will produce orbits. We do not understand why matter has gravity very much, all we know is that matter by its very nature has gravity in this universe. The origin of gravity is still a mystery but as far as my understanding is concerned, gravity is an intrinsic property of matter so if matter is produced from a product of the big bang, so will gravity. I suspect that gravity may be somewhat independent from matter.
You cannot say that the big bang cannot produce patterns such as orbits and gravity when you hardely understand the big bang itself. The very nature of causality in this universe will created patterns from non-design forces.
One of the ordered system that I am referring to is our Solar System and her components: The Sun, the Earth, the Moon, etc.; not mention the components in each of these bodies. No Big Bang Theory (Chaos) cannot produce such ordered systems as these.
Motion and gravity produced these things as I already explained with star and planet creation. Matter gets trapped in a star's orbit when it has enough tangential velocity to keep from falling into the star. Tangential velocity is the reason the moon does not fall into the earth like you would if you jumped off the roof of your house. Here is a diagram that shows rotational motion.
The key point is that a satelite with enough tangental acceleration can get stuck in the orbit of a planet. Orbits do not require a supernatural explanation and have been understood for a while. The earth is simply an orbiting planet with a lot of water.
Only a fool would believe in such mythology as the Big Bang Theory.
The big bang was derived from theoretical models of the universe using general relativity and that space itself in the universe is expanding and the universe has existed for billions of years. The earlier back in time we go, the smaller and hotter the universe gets. It is a reasonable inference that this hot dense universe came from a singularity but this requires evidence to be science.
Decades after the big bang hypothesis was created by a Catholic priest we discovered the cosmic radiation that came from the big bang. This radiation is everywhere and uniform, and is very cold just like it should be if it had been sitting around for 14 billion years. This radiation ended any chance Fred Hoyle had of discrediting the big bang.