== == Most of the time the answer would be Neptune. But for about 15 years of Pluto's orbit, it is inside Neptune's orbit, so during those times the answer would be Uranus. Pluto is currently beyond Neptune's orbit.
The closest planet to Pluto would be Neptune. Note that Pluto was famously reclassified as a dwarf planet (which is defined as neither a planet nor a satellite); and also was once considered (and rejected) as a candidate twin-planet system with its moon Charon owing to the latter's relatively large mass.
Because of the shape of Pluto's orbit it does occasionally come inside that of Neptune.
Pluto was discovered after all the planets (in the Solar system) had been discovered. One or possibly two minor planets were discovered before Pluto, but the majority of minor planets and minor planet candidates were discovered afterward.
Although Pluto is not a planet, rather a dwarf planet, the answer you are looking for is neptune.
The cavemen did, once the weather cleared up.
which of eight planets is alphabetically first
Mercury
The first planet from the Sun is Mercury, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was previously classified as the ninth planet, but it is now considered a dwarf planet.
The first planet in our solar system is Mercury.
Mercury is the first planet in our solar system, located closest to the Sun. It has no moons and has a rocky surface with extreme temperature variations.
The first gas planet in our solar system is Jupiter. It is the largest planet and is composed mainly of hydrogen and helium.
The first planet in the Milky Way galaxy is Mercury. It is the closest planet to the sun and the smallest planet in our solar system.
Earth is closer to the sun than Mars.
Superman comes from the planet Krypton.
The first planet from the Sun is Mercury, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was previously classified as the ninth planet, but it is now considered a dwarf planet.
He comes from the planet Earth.
Mercury comes before Mars in terms of their positions in the solar system. Mercury is the closest planet to the sun, followed by Venus, Earth, and then Mars.
Mercury is the first planet .
Venus
Venus
Planet Neptune
the planet Saturn
Mercury is the first planet in our solar system.
As it is the closest planet to the Sun, it is the first planet.