SwRI scientists studied the binary asteroid Patroclus-Menoetius, shown in this artist’s conception, to determine that a shake-up of the giant planets likely happened early in the solar system’s history, within the first 100 million years.
Evidence for very early migration of solar system planets - space science news

By studying a pair of asteroids, astronomers have been able to illuminate the history of our solar system. It turns out that there has been a period of instability, involving the giant planets Jupiter, Saturn, Uranus and Neptune, which pushed Uranus and Neptune outwards within the first 100 million years after the solar system had been formed. These two planets met with smaller bodies that are now in the Kuiper belt, at the edge of our solar system, but a few of them scattered inwards. Two of those are the asteroids that have now been studied, and are in fact targets of NASA’s upcoming Lucy mission.

Read the full story: Southwest Research Institute
Scientific publication: Nature Astronomy