Neptune is the farthest planet from the sun and it can take up to two human lives just to make one “Neptune year”. Unlike the small difference between Venus and Earth, the orbit of Neptune takes almost twice that of Uranus. This, of course, is due to the vast distance that separates the sun and Neptune.
In fact, Neptune is so far away that you could start biking at 20 MPH you would reach Neptune in 15,400 and a half years. In other words, you would have to have 171 bikers trade off from birth to death, traveling at a steady 20 MPH all day and night long to reach Neptune. Now that is far away.
Neptune is also very . . . read the rest of this article >>