During the beginning of the solar system, the rocky formation that was to become Earth might have taken a much shorter time to form than we thought in the past. It would appear that, according to an analysis that was performed at the beginning of 2020, there is some proof that most of our planet took as little as 5 million years to become whole. That is several times shorter than it is suggested by most of our present models.
This revision that was made on our present model indicates an important contribution that was made to our present understanding of the formation of planets in general. This change seems to indicate that the mechanisms involved are a lot more complex than we think at the moment, even between different planets in the same category and found in the same cosmic neighborhood. In this particular case, the cosmic neighborhood refers to the one of rocky planets, such as the Earth and Mars.
For now, we are not completely sure regarding how planets actually form. Astronomers have an idea of the general process that occurs, but the details are, at times, rough around the edges and they are very difficult to observe during action. The main parts of planetary formation involve the binding up of stellar formations. Stars make themselves when a cloud of dust and gas essentially collapses in on itself because of its gravity, then tarts spinning. This makes the dust and the gas swirl around it, just like water spins around a drain.
When it forms, all of that material ends up creating sort of a flat disc, which feeds into the eventual growing star. However, not all of that disc is eaten up. The remains are known as the protoplanetary disc, then it forms the actual planets. That is why the planets in our system are aligned flatly around our star.