List of Space Words in English with Pictures

Last updated on July 15, 2024 by Emma Grace

This reference aims to teach you English vocabulary related to the vast universe. By the end, you will have a solid grasp of key space words and their meanings. Expand your English vocabulary and discover the wonders of space at the same time.

List of Space Words

List of Space Words
List of Space Words – Created by 7ESL
  • Asteroid
  • Atmosphere
  • Celestial
  • Comet
  • Cosmos
  • Eclipse
  • Galaxy
  • Gravity
  • Light-Year
  • Meteor
  • Meteorite
  • Meteoroid
  • Moon
  • Orbit
  • Planet
  • Satellite
  • Star
  • Universe

Space Words with Facts

  • Asteroid

Asteroids are floating pieces of space minerals and rock. Asteroids, unlike meteoroids, are greater than one meter in diameter.

  • Atmosphere

Atmosphere refers to a layer of gas that surrounds a planet or other celestial body.

  • Celestial

“Celestial” refers to objects and phenomena that are of the heavens or sky. Celestial bodies include things like stars, planets, moons, and comets.

  • Comet

Comets are large masses of rock, dirt, and ice that orbit a star (like our sun). When they approach a star, their ice melts and they break apart — forming a trail of dust and gas called a “tail”.

  • Cosmos

Cosmos is a term, ancient Greek in origin, that refers to the universe.

  • Eclipse

An eclipse is when a celestial body is blocked from view by another celestial body. A common type of eclipse is a solar eclipse, in which an object (like the moon) obscures the sun.

  • Galaxy

A galaxy is an entity that is bound by gravitational forces. Galaxies commonly consist of swirling masses of stars, planets, dust, gas, and dark matter. Our galaxy is known as the Milky Way.

  • Gravity

Gravity is a force of the universe that attracts objects of mass to one another. On Earth, gravity pulls objects to its center; in our solar system, the sun’s gravity pulls the planets towards the sun’s mass.

  • Light-Year

A light-year is a measure of distance. It is the amount of distance light can travel in a vacuum. One light-year is 9.46 times 10^12 kilometers.

  • Meteor

A meteor refers to the light and particle of matter that enters the Earth’s atmosphere (from a meteoroid).

  • Meteorite

A meteorite is the remains of a celestial body (a comet, asteroid, or meteoroid) that has collided with earth.

  • Meteoroid

A meteoroid is a celestial body of rock or metal that is one meter in diameter or smaller.

  • Moon

A moon refers to a satellite that revolves around a planet (i.e. orbits the planet).

  • Orbit

The orbit is a reference to the direction, acceleration, and speed one (celestial) object takes in relation to another.

  • Planet

A planet is a celestial mass that is large enough that it takes a round shape due to its own gravity. Planets are not large enough, however, to cause nuclear fusion reactions on their own.

  • Satellite

A satellite is a natural or man-made object that typically orbits a planet.

  • Star

A star is a round ball of plasma held together by its own gravity. Stars consist of burning gases and are luminous in nature.

  • Universe

A universe refers to everything within the Cosmos — including stars, planets, moons, and galaxies.

Learn more with natural words in English.

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