Why is planeta masculine if it ends in -a?

Planeta comes from the Greek word planetes (wanderer), and many Greek-origin words that entered Spanish through Latin retained their masculine gender despite ending in -a. Other examples include el mapa, el tema, el sistema, and el problema. This is one of the most common traps for Spanish learners.

What are the planets called in Spanish?

The eight planets in order are: Mercurio, Venus, Tierra, Marte, Júpiter, Saturno, Urano, and Neptuno. Most names closely mirror their English equivalents since both languages derive them from Roman gods. Tierra is the exception—it simply means 'Earth' or 'land.'

How do you say 'save the planet' in Spanish?

The most common phrase is salvar el planeta or cuidar el planeta (care for the planet). In environmental campaigns, you will also hear proteger el planeta (protect the planet) and preservar el medio ambiente (preserve the environment).

Spanish vocabulary · Beginner

PLANET in Spanish: PLANETA

Written by Sofia Ramirez, Lead Spanish Curriculum Editor · Reviewed May 2026

Planeta · noun · plah-NEH-tah

The Spanish word for planet is planeta, and despite ending in -a, it is a masculine noun—el planeta, not la planeta. This is one of several Greek-origin words in Spanish (like el mapa, el tema, el problema) that break the typical gender pattern. Planeta works the same way as its English counterpart, referring to celestial bodies orbiting a star or, figuratively, to the Earth itself when people talk about protecting 'the planet.'

plah-NEH-tah

Marte es el cuarto planeta del sistema solar.

Mars is the fourth planet in the solar system.

How Native Speakers Use Planeta

Real example sentences across three contexts you'll actually run into.

Science class

Júpiter es el planeta más grande del sistema solar.

Jupiter is the largest planet in the solar system.

Planet names in Spanish are similar to English, often derived from Roman mythology.

Environmental awareness

Todos debemos cuidar el planeta para las futuras generaciones.

We all must take care of the planet for future generations.

El planeta is frequently used as shorthand for Earth in environmental discussions.

Expressing exaggeration

Es la mejor pizza del planeta, te lo juro.

It is the best pizza on the planet, I swear.

Using del planeta hyperbolically emphasizes something is the best anywhere.

Avoid These Mistakes When Using Planeta

Assigning feminine gender

Incorrect: La planeta Tierra tiene un solo satélite natural.

Correct: El planeta Tierra tiene un solo satélite natural.

Even though planeta ends in -a, it is masculine. Words of Greek origin ending in -ma or -ta in Spanish are almost always masculine.

Pluralizing incorrectly

Incorrect: Los planetas del sistema solar son ocho, incluyendo los planetaes enanos.

Correct: Los planetas del sistema solar son ocho, sin contar los planetas enanos.

The plural of planeta is planetas, following the regular -a to -as pattern. There is no -aes ending.

Lock in Planet Vocabulary with the Parrot Method

Why word lists alone don't stick

Memorizing a translation feels productive, but most learners forget 70% of what they studied within 48 hours. Vocabulary needs spaced repetition AND real-world exposure to transfer to long-term memory.

See Planeta used by native speakers

Parrot's short-form videos feature native speakers using planeta in real situations. Context-based exposure beats flashcards, you hear Marte es el cuarto planeta del sistema solar. while watching someone live the moment, connecting meaning, sound, and rhythm at once.

Save, review, repeat, stay consistent

Tap any word to save it. Parrot's spaced-repetition system surfaces it right before you'd forget, no manual flashcard creation. The watch, parrot back, save, review cycle turns recognition into fluency at 2.7x the speed of traditional study.

Common Questions About Planet in Spanish

Why is planeta masculine if it ends in -a?: Planeta comes from the Greek word planetes (wanderer), and many Greek-origin words that entered Spanish through Latin retained their masculine gender despite ending in -a. Other examples include el mapa, el tema, el sistema, and el problema. This is one of the most common traps for Spanish learners.
What are the planets called in Spanish?: The eight planets in order are: Mercurio, Venus, Tierra, Marte, Júpiter, Saturno, Urano, and Neptuno. Most names closely mirror their English equivalents since both languages derive them from Roman gods. Tierra is the exception—it simply means 'Earth' or 'land.'
How do you say 'save the planet' in Spanish?: The most common phrase is salvar el planeta or cuidar el planeta (care for the planet). In environmental campaigns, you will also hear proteger el planeta (protect the planet) and preservar el medio ambiente (preserve the environment).