Interstellar Visitor May Have Altered Orbits of Our Outer Solar System Planets

• An interstellar object may have changed outer planets' orbits.
• The object was possibly eight times Jupiter's mass.
• This event might have happened 4 billion years ago.
• 50,000 simulations were run; 1% matched our solar system.
• The cosmic body approached Mars' current orbit.
• Research suggests substellar visits are common in space.
• Study on arXiv may reshape solar system dynamics understanding.