Astronomers Find Evidence of 5th Giant Planet After 122 Simulations Yield 2 Moon-Saving Scenarios
Updated
Updated · azedu.az · Jun 2
Astronomers Find Evidence of 5th Giant Planet After 122 Simulations Yield 2 Moon-Saving Scenarios
3 articles · Updated · azedu.az · Jun 2
122 early-solar-system models run thousands of times produced only two successful outcomes, and both required an additional fifth giant planet later ejected into interstellar space.
1% was the approximate chance that Jupiter's and Uranus's moon systems both survived the giant planets' orbital reshuffling without damage, pointing researchers to a missing planet in the early system.
15% of simulations preserved Jupiter's moons and 9% preserved Uranus's, showing how unlikely the current stable arrangement was under four-planet scenarios alone.
Jupiter's gravity appears to have flung the extra ice giant out of the solar system, a close encounter that also altered the other giants' paths and helped spare Uranus from destructive approaches.
Billions of years later, the findings suggest today's solar system emerged from a rare chain of chaotic events in which a now-lost giant planet played a decisive role.