See an Amazing Graphic Comparing Pluto to Earth - Time.
Some astronomers say that Pluto should be classified as a “minor planet” due to its size, physical characteristics, and other factors. On the other hand, some astronomers defend Pluto’s planet status, citing several key features. Indeed, most of the problem is that there is no formal definition of a planet.This essay has been submitted by a student. This is not an example of the work written by professional essay writers. A Comparison of Before You Were Mine and Pluto.Generally, most current research has reached the conclusion that there are only nine planets in the Solar System, i.e., Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and finally Pluto. However, various astronomical studies try to prove that Pluto should no longer be a planet.
Universe Today indicates that Pluto's volume is just 0.59 percent of the Earth's, and that Pluto could fit inside the Earth 170 times. Pluto's surface area is about 3.3 percent that of Earth's, and its mass is just 0.2 percent of the Earth's. Pluto has a much lower gravity than Earth, as well.Pluto’s elliptical orbit of the sun takes 248 years, and on average it is approximately 3.6 billion miles from the sun (Dunbar). Pluto has an extremely cold atmosphere since it is so far away from the sun. On average, Pluto’s atmospheric temperature is -390 degrees Fahrenheit, or 40 K (Schneider and Arny 380).
An ion engine provides a small but constant force on a spacecraft as it moves from the Earth to Pluto. Compare the acceleration of the spacecraft near the beginning of its journey with its acceleration as it flies past Pluto. The spacecraft's acceleration at Pluto is the same as its acceleration near Earth.
