You’d need a tremendous amount of matter (I’d guess much more than 1 Jupiter mass) to significantly protect the solar system from the outside. But then that mass would probably get pulled in by the sun. The reason the outer solar system remains outer is because it is mostly empty.
You’d need a tremendous amount of matter (I’d guess much more than 1 Jupiter mass) to significantly protect the solar system from the outside. But then that mass would probably get pulled in by the sun. The reason the outer solar system remains outer is because it is mostly empty.