Still that date will be one to circle on cosmic calendars. It takes Pluto slightly over 248 Earth years to orbit the sun, which means that on March 23, 2178, one Plutonian year will have elapsed ...

The heliosphere, a cosmic bubble formed by the Sun, protects our solar system from interstellar threats and influences life's ...

Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto. Pluto was last and least of them. An icy dwarf only half the size of the United States, it was on average 3.7 billion miles from the sun.

The point shifted its position by just 3 millimeters on the plates, which factored out to a world approximately 43 times farther from the sun than the Earth is. Pluto had been found.