The Planets

• 

What does it take for something to be considered a planet? Definition established by the international astronomical union common a planet is a spherical object that orbits star and has a strong in the gravitational pull cleared the neighbourhood around its orbit of debris. 26 of this definition point out that Earth, Mars Jupiter and Neptune all travels within entourage of debris.

The eighth classical planets fall into two different categories: terrestrial planets and gas giants. The terrestrial planets which are the four innermost planets in our solar system-mercury Venus Earth and Mars are primarily composed of silicate rocks.

Jupiter Saturn Uranus and Neptune Aarti gas giants. These large points are composed mostly of frozen hydrogen and helium. And letters your planets they have no solid surface. They also are called jovian planets to Jupiter.

What else is out there?

Dwarf planets are smaller round objects that orbit the sun. Because there gravitational pull is be, they have debris within their orbits. They are not, however, satellites of other planets. Pluto, Ceres ( found in the asteroid belt), and Eris (located in the kuiper belt) are dwarf planets. More likely soon be identified.

Two other types of planets are known as super Earths and hot jupiters. These are called exoplanets (short for extrasolar planets) because they may exist outside our solar system. Super its measure two to three times the size of earth and are made of Rock and I. They orbit cooler at stars about half the size of our son but do so at distances to close to allow our life. A super that orbits it’s a safe distance might be able to support life. Her jupiter’s which are larger than Jupiter, are made of cas and orbit extremely close to their stars. Because of their size they are quite easy to detect.

Watch about Pluto?

Pluto’s status as a full-fledged planet was reported in 2006. Many people, scientist and laypersons alike, grieved Pluto’s demotion. This tiny planet at the far reaches of our solar system has many admirers. Even if below Disney cartoon characters had been named after it.

What as astronomers discovered other objects about the size of Pluto out in the Kuiper belt, beyond neptune’s orbit coma they came to regard Pluto as one of a group of orbiting bodies and not as a solitary planet. The question of whether to classify such objects as planet or to reassign Pluto form the basis of intense argument among members of the international astronomical union (IAU) in 2006. The vote at the international astronomical union convention was not in pluto’s favour so 76 years after the orbiting body was discovered and heralded as the ninth planet, it was downgraded to draw planet status.