A team of researchers has found a simpler and less mysterious answer as to why bodies in the distant solar system have strange orbits. One of the biggest mysteries of out stellar neighbourhood has ...

A new study suggests that a close encounter with a massive interstellar object, possibly eight times the mass of Jupiter, may have significantly altered the orbits of the four outer planets in our ...

Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered by the fly-by of an enormous object from deep space, billions of years ago. According to a pre-print research paper, which is yet ...