Astral visitor may have changed orbital path of solar system planets, says study. Paths of four outer giant planets, Jupiter, Saturn, Uranus and Neptune minorly deviate from ideal orbital shape.

In searching for the elusive Planet Nine, researchers instead turned up a different resident in our cosmic backyard.

WASHINGTON >> Scientists have identified an object about 435 miles wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a ...

The Vera C. Rubin Observatory is expected to find millions of unknown objects in our solar system, and perhaps even a ...

That means it sometimes is closer to the sun than Pluto, whose orbital distance ranges from 30 to 49 astronomical units as it travels an elliptical path around the sun.

Our solar system may have a ninth planet after all, ... but the new definition of a planet requires the celestial body to have enough gravity to clear its orbital path from other bodies. ...