National Geographic has produced a video that explains what science textbooks currently teach about how Earth and other planets in our solar system formed.
The Standard Theory explanation starts with a nebula (like Mass Vortex Theory). Then it conceives of a situation in which atoms of the nebula move towards the center of gravity—neglecting kinetic energy and overcoming coulomb forces between atoms (which are much stronger than gravity)—so that a situation called “gravitational collapse” is realized. Standard Theory posits that this leads to fusion of hydrogen in the dense ball of material around the center of gravity.
This video picks up with the Standard Theory chronology after this, after the sun formed. Thus, Standard Theory posits that the sun formed before the planets which is why I call it Sun-First Theory.