GK
SOLAR SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Pluto is not considered a planet since ____
|
|
2006
|
|
|
2019
|
|
|
1990
|
|
|
It is still considered as a planet
|
Explanation:
Detailed explanation-1: -In August 2006 the International Astronomical Union (IAU ) downgraded the status of Pluto to that of “dwarf planet.” This means that from now on only the rocky worlds of the inner Solar System and the gas giants of the outer system will be designated as planets.
Detailed explanation-2: -Pluto follows the first two rules: It is round, and it orbits the sun. It does not, however, follow the third rule. It has not yet cleared the neighborhood of its orbit in space. Because it does not follow this rule, Pluto is no longer considered a planet.
Detailed explanation-3: -Demoted shortly after to being a mere asteroid, the same IAU meeting in 2006 that demoted Pluto upgraded Ceres to dwarf planet status.
There is 1 question to complete.