Space Words | List of Interesting Words Related to the Space

Astronomy is the study of objects in outer space, such as stars, moons, and planets. It also is the study of phenomena in the physical universe — and the properties of objects that are usually far away from Earth. But what are some common “space words” and what do they mean? This article will review astronomical terms and define some of the most common space words around.

Space Words

Space Words | List of Interesting Words Related to the SpacePin

List of Space Words

  • 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.

Frequently Asked Questions

What are common terms in space exploration?

In space exploration, you will come across terms like “astronaut,” “rocket,” “gravity,” “satellite,” and “space station.” Astronauts are individuals trained to travel in space, while rockets launch them and their equipment into space. Gravity is the force that attracts a body towards any other physical body having mass. Satellites are man-made objects that orbit celestial bodies, and space stations are habitable artificial structures in space.

Can you name some space-related slang?

Sure, some space-related slang words include “astro-chatter” (talk about space or space travel), “ground pounder” (a person who doesn’t work in space), “lunie” (someone living on the moon), and “space case” (a person who is absent-minded).

What are words to describe outer space?

Various descriptive words can be used for outer space, such as “vast,” “infinite,” “universe,” “mysterious,” “unknown,” “dark,” “star-filled,” “boundless,” and “cosmic.” These words evoke the sense of wonder and curiosity that surrounds space exploration and viewpoints.

How do words relate to space and time?

In the context of science and astronomy, words like “spacetime,” “relativity,” and “continuum” can be used to discuss the relationship between space and time. Spacetime is a fusion of space and time, and it describes how objects move in space under the effect of gravity. Relativity, particularly Einstein’s Theory of General Relativity, mathematically explains spacetime and the way objects are influenced by gravity. The term “continuum” refers to the unbroken expanse of spacetime, encompassing the entire universe.

Which space words start with the letter T?

Here are a few space words that start with the letter T: “telescope” (an instrument used to observe distant objects), “trajectory” (the path followed by an object such as a spacecraft), “terminator” (the line that divides the lit and unlit sides of a celestial body), and “transit” (when a celestial body passes in front of another, blocking its light).

Which space words start with the letter D?

A few space words that start with the letter D are: “dark matter” (an unidentified form of matter that influences the gravity of galaxies and clusters), “dwarf planet” (a small celestial object, like Pluto, that revolves around the sun, but lacks the properties of a full-fledged planet), “delta-v” (a measure of the change in velocity of a spacecraft), and “declination” (an angular distance used to describe the position of a celestial object). 

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Last Updated on November 15, 2023

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