Pluto has been voted off the island the distant, ice-covered world is no longer a true planet, according to a new definition of the term voted on by scientists today. A planet or not, pluto will remain on our scientific consciousness for years to come moreover, the decommissioning of pluto had the effect of a bomb in the united states it was the only planet in the solar system to have been discovered by an american. In addition, a planet has to dominate the neighborhood around its orbit pluto has been demoted because it does not dominate its neighborhood charon, its large moon, is only about half the size of pluto, while all the true planets are far larger than their moons.
Pluto (minor planet designation: 134340 pluto) is a dwarf planet in the kuiper belt, a ring of bodies beyond neptune it was the first kuiper belt object to be discovered pluto was discovered by clyde tombaugh in 1930 and was originally considered to be the ninth planet from the sun. Pluto is now becoming more to the public than just the planet that no longer was before long, we’ll be able to understand much about its atmosphere, its moons and how it fits into the story of the solar system’s history.
Some astronomers once theorized that pluto used to be one of neptune's moons pluto's orbit is erratic the planets in our solar system all orbit the sun in a relatively flat plane pluto, however, orbits the sun at a 17-degree angle to this plane in addition, its orbit is exceptionally elliptical and crosses neptune's orbit. It's smaller than any other planet -- even smaller than earth's moon it's dense and rocky, like the terrestrial planets (mercury, venus, earth and mars) however, its nearest neighbors are the gaseous jovian planets (jupiter, saturn, uranus and neptune.
In a word, no some experts immediately questioned the part of the definition about a planet clearing its orbital neighbourhood this is because earth shares its cosmic turf with more than 12,000 near-earth asteroids thus, some have argued that earth, jupiter and other planets also fail to meet the iau's 2006 definition. Pluto used to be known as the smallest planet in our solar system, and the furthest planet from the sun pluto was discovered in 1930 by clyde tombaugh , an american astronomer pluto is over 58 billion km (36 billion miles) away, and it takes pluto 248 years to orbit the sun. Once these changes became official, pluto no longer fit the definition of a planet according to new rules adopted by the international astronomical union, a celestial body must meet the following criteria in order to qualify as a planet: a planet must be round a planet must orbit the sun a planet must have “cleared the neighborhood of its orbit.
American astronomer clyde tombaugh discovered pluto in 1930 from 1930 until 2006, pluto sat comfortably beyond neptune as the ninth planet in our solar system in 2006, however, changes were made the truth is, nothing about pluto changed, but the definition of a planet did once these changes became official, pluto no longer fit the definition of a planet.
Why is pluto no longer a planet the international astronomical union (iau) downgraded the status of pluto to that of a dwarf planet because it did not meet the three criteria the iau uses to define a full-sized planet. Even though pluto is a dwarf planet, and no longer officially a planet, it’ll still be a fascinating target for study and that’s why nasa has sent their new horizons spacecraft off to visit it new horizons will reach pluto in july 2015, and capture the first close-up images of the (dwarf) planet’s surface. As such, pluto is no longer considered to be the 9th planet of our solar system pluto's small size research has shown that pluto is an extremely icy planet, colder even than antarctica further, pluto has less gravity compared to that of earth pluto has five moons: charon, hydra, kerberos, nix, and styx. Pluto used to be known as the smallest planet in our solar system, and the furthest planet from the sun pluto was discovered in 1930 by clyde tombaugh, an american astronomer pluto is over 58 billion km (36 billion miles) away, and it takes pluto 248 years to orbit the sun.
But it was discoveries of kuiper belt objects with masses roughly comparable to pluto, such as quaoar (announced in 2002), sedna (2003) and eris (2005), that pushed the issue to a tipping point eris, in particular, appeared to be larger than pluto - giving rise to its informal designation as the solar system's tenth planet.