In which category do Mercury and Venus fall regarding their moons?

Mercury and Venus are categorized as having no moons. This is an established fact in planetary science. Mercury, being the closest planet to the Sun, has very little gravitational influence and therefore does not retain any moons. Similarly, Venus does not have any moons, which is quite unique among planets in our solar system, especially considering that other terrestrial planets, like Earth and Mars, have one and two moons, respectively. The absence of moons for both Mercury and Venus comes from various factors including their proximity to the Sun, which disrupts the ability of smaller bodies to remain in orbit around them. This characteristic helps identify these two planets distinctly within the classification of their moons.