  Exo-planet migration is assumed to have occurred to explain close-to-star gas
giant exo-planets within the context of the so-called standard model of solar
system formation, rather than giving cause to question the validity of that
particular model. I present evidence against the concept of planet migration,
evidence that is historical, interdisciplinary, and model-independent. First, I
demonstrate a flaw in the standard model of solar system formation that would
lead to the contradiction of terrestrial planets having insufficiently massive
cores. Then, I discuss the evidence that points to the Earth previously having
been a Jupiter-like close-to-Sun gas giant and the consequences that arise
there from. Observations of close-to-star gas giant exo-planets orbiting stars
other than our own Sun, rather than being evidence for planet migration, I
submit, are evidence for differing degrees of violence associated with the
thermonuclear ignition of their particular stars. As observational resolution
improves, one might expect to find other exo-planetary systems, like our own,
with their innermost planets stripped of gaseous envelopes. Such systems may be
a necessary requirement for the existence of life.
