The gravitational forces in our solar system are very week, and therefore general relativistic corrections are parts in a million or much less than that. They can be measured only with the most precise and stable atomic clocks.
“The formation of the solar system came long long after the big bang”
Spirited: In other words, before all else there was a void (nothingness) out of which emerged self-created primordial matter, the beginning of all things, a cosmic egg.
Circling the cosmic egg was Chronos (Time) who split the egg apart (big bang)to form the universe of earth, sea, sky, and life.
In Darwin’s tale, the cosmic egg was lain upon primordial waters of the earth.
Returning to the big bang version, that Chronos split apart the cosmic egg is evidenced by “The presence of heavy elements...” that show “...that we are a later generation development - condensed out of (hatched out of) the remnants of earlier supernovae explosions.”
Now either the living, personal supernatural God IS, and He called all things into existence from nothing (creatio ex nihilo) or primordial matter (cosmic egg) spontaneously generated itself from nothing (void, abyss) after which all things and life evolved (hatched) over Time (Chronos) into what they are today.