Question

Which celestial body was originally considered to be a planet but was later reclassified as a dwarf planet?

1) Mars
2) Neptune
3) Earth
4) Mercury
5) Saturn
6) The Sun
7) Eris
8) Uranus
9) Venus
10) Jupiter
11) Pluto

Answer 1

Pluto was originally considered a planet after its discovery in 1930, but was reclassified as a dwarf planet due to the presence of many similar objects in its orbit.

Step-by-step explanation:

The celestial body that was originally considered to be a planet but was later reclassified as a dwarf planet is Pluto. Pluto was discovered in 1930 and is part of a region in space known as the Kuiper Belt, which contains many icy objects, including other dwarf planets like Eris and Makemake. In the early 21st century, it was decided that Pluto did not fit the criteria to be classified as a planet because it shares its space with many similar objects, and thus was reclassified as a dwarf planet.