A USP, or ultra short period planet, is a evolving star that exchanged orbits with another object, meaning the angular momentum was exchanged. This rearrangement is natural and predicted to occur with stars of all sizes and ages.
The nebular hypothesis did not predict this. The astronomers are clueless. They have no idea how objects as massive as 70 Jupiter masses can exist that close to a much younger host star.
The case as it stands is simple really. Young hot stars are not billions of years old. This is why they can adopt much older ones that haven't had their thick atmospheres ripped away. There just simply has not been enough time.
Book here: https://vixra.org/pdf/1711.0206v5.pdf
