Below is a massive list of space words - that is, words related to space. The top 4 are: galaxy, stardust, cosmos and universe. You can get the definition(s) of a word in the list below by tapping the question-mark icon next to it. The words at the top of the list are the ones most associated ...

Planet: A large body in outer space that circles around the sun or another star. Pulsar: An object, thought to be a rapidly rotating neutron star. It releases short pulses of radio waves and other electromagnetic radiation. Quasar: Compact area in the center of a massive galaxy that is around a supermassive black hole. They are some of the brightest objects in the universe and can be observed across the entire electromagnetic spectrum.

Observable Universe · Observation · Observatory · Opposition · Optical Astronomy · Optical Telescope · Optics · Orbit · Orbital Period · Outer Planets · Outer Space · Ozone · Protoplanet · Protoplanetary Disk · Planetesimal · ...

20 hours ago - A branch of observational astronomy which analyzes minute distortions in the curvature of spacetime known as gravitational waves to collect observational data about astronomical objects and events such as neutron stars, black holes, supernovae, and the Big Bang. ... An ionized nebula powered by young, massive O-type stars. Ultraviolet photons from these hot stars ionize gas in the surrounding environment, and the nebular gas shines brightly in spectral lines of hydrogen and other elements. Because O-type stars have relatively short lifetimes (typically a few million years), the presence of an H II region indicates that massive star formation has taken place recently at that location.

August 18, 2009 - universe · Uranus · V · vacuum · Van Allen belt · variable star · Venus · vernal equinox · visual magnitude · W · waning · wavelength · waxing · weightlessness · white dwarf · white giant · wormhole · X · x-rays · Y · yellow dwarf · Z · zenith · zodiac · Other Links: You Might Also Like: April Fools' Day Vocabulary Word List · Toys and Games Vocabulary Word List ·

Comet Comets are made of ice, dust and rock, so they are sometimes called “dirty snowballs”. They come from the outer regions of the Solar System and travel around the Sun, like planets. Corona The corona is an envelope of blisteringly hot gas surrounding the Sun. Cosmic Dust Cosmic dust is made up of tiny solid particles in space, sometimes called stardust. You could fit dozens of these particles onto a pinhead. Dark Energy Dark energy is the main ingredient of the Universe (roughly 68%). Little is known about it, except that it opposes gravity, causing galaxies to fly apart from each other faster.

April 4, 2024 - It comes from the Greek word syzygía, meaning “union” or “pair.” In addition to syzygy, other cool words that astronomers use to refer to space observations include azimuth, parsec, ephemeris, and albedo.

June 3, 2024 - For example: In IELTS Speaking Part 3, you might be asked to talk about the future of space travel, while in Writing Task 2, you may be asked to give your opinion on whether governments should invest in space programs. Using accurate and appropriate terms such as astronaut, launch, or orbit helps you express your ideas more clearly and achieve higher scores in vocabulary-related criteria. Space vocabulary in English covers terms about the universe, outer space, and exploration

a heavenly body with such strong gravity that light cannot escape it and that is thought to be caused by the collapse of a massive star ... Ceres: a dwarf planet that orbits within the asteroid belt with a mean distance from the sun of 2.7 ...

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Twinkl's Teaching Wiki gives explanations of common terms and key vocabulary used in teaching, and shows related Twinkl resources for each term.

September 20, 2025 - As we finish our journey through cosmic vocabulary, we see that the language of space and astronomy is just as vast and amazing as the universe itself. These 40 terms give us a small peek into the many words used to talk about our cosmic neighborhood and the things in it.

October 27, 2024 - From terms like “nebula” and “galaxy” to “event horizon,” these powerful words related to space capture the essence of celestial phenomena and the boundless realms beyond our world.

September 8, 2025 - Here you will learn some English words about space, such as "galaxy", "solar", "cosmic", etc. that are needed for the TOEFL exam. ... Ex: Philosophers and physicists ponder the ultimate fate and origin of the universe.

October 7, 2020 - The word “constellation” itself, however, comes from Latin. It combines the prefix com, meaning “together,” with stellare, the past participle of “to shine,” which itself derives from stella (“star”). Cosmos refers to the whole universe and everything we know in it. Unlike many of the space words on this list, “cosmos” hasn’t been around for that long, at least in the sense in which we use it today.

September 27, 2022 - A galaxy is a wide-ranging mix of dust, gas, stars, and various solar systems brought together by a singular gravitational pull. A gamma-ray burst is the most violent type of explosion in the universe. The explosion itself emits more energy in 10 seconds than the sun will emit in its lifetime. When it happens, it's the brightest source of light in the observable universe. Satellite evidence suggests gamma-ray bursts are the result of matter collapsing into black holes. Based on the Latin word for "weight," gravity is a natural phenomenon where things with mass or energy are drawn toward its center.

November 30, 2023 - That ball suddenly expanded outwards at an extreme rate, throwing matter in all directions and creating the universe we know today. A black hole can form for many reasons, the main one being a star dying. When matter collapses in on itself, it becomes extremely dense and has a strong gravitational pull. This gravitational pull is so strong actually that nothing can escape it, including light. This is why we call it a black hole; from our perspective, there is nothing there since light can’t escape. You might have seen this space word used a few times in this article alone.

words only definitions & notes · in list order · from A to Z · from Z to A · from easy to hard · from hard to easy · debris · the remains of something that has been destroyed · astronaut · a person trained to travel in a spacecraft · asteroid · a small celestial body composed of rock and metal · atmosphere · the envelope of gases surrounding any celestial body · cosmos · the universe considered as a whole ·

Heliosphere The space within the boundary of the heliopause containing the Sun and the Solar System. Hydrogen An element consisting of one electron and one proton. Hydrogen is the lightest of the elements and is the building block of the universe.