Question

Какая из названных планет сейчас не считается планетой?

Answer 1

Плутон. Со дня своего открытия в 1930 и до 2006 Плутон считался девятой планетой Солнечной системы.

Answer 2

The Status of Planets in the Solar System

Currently, Pluto is the planet that is not considered a planet anymore. In 2006, the International Astronomical Union (IAU) redefined the criteria for what qualifies as a planet, and as a result, Pluto no longer meets the criteria and is now classified as a "dwarf planet".

This decision was made due to the discovery of other celestial bodies in the outer solar system that are similar in size to Pluto. The IAU's new definition of a planet requires that a celestial body must have cleared its orbit of other debris, and Pluto has not met this criterion, leading to its reclassification