The “new” farthest planet
Since Pluto’s demotion from a full planet to a dwarf one, Neptune is now classified as the most distant world in our solar system; and distant it is. Neptune’s orbit is around 2.8 billion miles, or 4.5 billion kilometers away from the Sun. To simplify this massive number, just imagine being 30 times farther away from the Sun as you are on earth. It’s no wonder that Voyager 2, the only spacecraft to observe Neptune up close, took 12 years to reach the icy planet, despite traveling at a speed of over 35,000 miles, or 56,000 kilometers, per hour.