Observations of faraway planets have forced a near-total rewrite of the story of how our solar system came to be.
Solar system formation
At Nautilus: Were It Not for Cosmic Good Fortune, We Wouldn’t Be Here
Sean Raymond, Beibei Liu & Seth Jacobson offer a solar system model affirming that the “dynamical instability” of our early solar system had to go just right, or we probably wouldn’t be here.