Most Americans now expect to retire at age 65 or later. [See The 10 Best Places to Retire in 2012 .]. It's just not possible for people to work for 30 or 40 years and support themselves on their assets for another 20 or 30 years, says Alicia Munnell, director of the Center for Retirement Research at Boston College.
Unlike many of the planets in the solar system, such as Earth, Pluto does not bulge at its center; its radius â 1,185 km (737 miles) â is the same at its poles and at its equator. Circumference: If you were to take a walk around the equator of Pluto, you would travel about 4,627 miles (7,445 km). That is just a bit less than the distance from Denver to London (4,683 miles). Pluto is thought to have a rocky core covered by ice, which would mean that its surface features would change with temperature as it travels closer to and farther from the sun.
On average, Pluto is a distance of approximately 39.5 astronomical units, or AU, from the sun. That is almost 40 times farther from the sun than Earth is. Because of its elliptical orbit, Pluto's closest point to the sun is 29.7 AU. This means that Pluto is sometimes closer to the sun than the planet Neptune.n 2006, NASA launched New Horizons, which is the first mission to Pluto. New Horizons is a spacecraft about the size of a piano that is flying to the outer edge of the solar system. The spacecraft will take nine years to reach Pluto. In 2015, New Horizons will spend more than five months studying Pluto and its moons.