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C1 Level Wordlist - Astronomy

Here you will learn some English words about astronomy, such as "cosmic", "comet", "dwarf", etc. prepared for C1 learners.

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CEFR C1 Vocabulary
aerospace
[noun]

the earth's atmosphere and the space beyond it

Ex: Advances aerospace technology have led to more efficient and safer air travel around the world .
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a branch of biology that deals with the study of life in space

Ex: The search for biosignatures is a key focus astrobiology, aiming to identify signs of life on distant planets and moons .
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atmospheric
[Adjective]

having a connection to or originating in the Earth's atmosphere

Ex: Atmospheric pollution from factories and vehicles contributes to air quality issues in urban areas .
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cosmic
[Adjective]

related to the universe and the vast space outside the earth

Ex: Cosmic consciousness is a philosophical concept exploring humanity 's connection to the universe .
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full moon
[noun]

the complete and round-shaped moon as seen from the earth

Ex: People gathered on the beach to watch full moon rise above the horizon .
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half-moon
[noun]

the moon when only half of its bright surface can be seen from the earth

Ex: The nighttime joggers enjoyed their run under the gentle glow of half-moon.
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new moon
[noun]

the moon when only a small portion of its bright side is visible from the earth

Ex: Astronomers study the alignment of celestial bodies during new moon to observe faint stars and galaxies .
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(of the sun or moon) to go out of sight below the horizon

Ex: In the early morning, the moon was still visible, and we waited for it to go down.
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big bang
[noun]

the explosion that, according to most scientists, caused the existence of the universe

Ex: Scientists continue to explore the implications of the Big Bang theory through astronomical observations and theoretical physics.
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cosmos
[noun]

the universe, particularly when it is thought of as a systematic whole

Ex: Understanding cosmos requires interdisciplinary collaboration across astronomy , cosmology , and physics .
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any natural object in the space, such as the sun, moon, etc.

Ex: Telescopes allow astronomers to observe celestial bodies in detail .
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a pale band of light seen in the sky at night that contains the solar system and billions of other stars

Ex: Ancient cultures observed the Milky Way and incorporated it into their myths and legends.
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a specific group of stars that form a pattern and have a name related to their shape

Ex: constellation Cassiopeia forms a distinct " W " shape in the northern sky .
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zodiac
[noun]

(astronomy) the celestial zone in the sky where the sun, moon, and planets appear to move, traditionally divided into twelve equal segments, each associated with a distinct name and symbol

Ex: People born under the sign of Leo are said to possess strong leadership qualities , according to zodiac.
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comet
[noun]

an object in space that is a mass of ice and dust and when it nears the sun it starts illuminating in the shape of a tail

Ex: The appearance of a comet in the night sky often attracts attention from amateur astronomers and stargazers alike .
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dwarf
[noun]

a star that is relatively small in size or mass and is not very bright

Ex: Dwarf stars are often studied to understand stellar evolution and the life cycles of stars in the universe .
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exoplanet
[noun]

a planet that is outside the solar system

Ex: Scientists use advanced telescopes and observatories to detect the faint signals exoplanets orbiting distant stars .
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meteor
[noun]

a piece of rock coming from outer space that passes through the Earth's atmosphere, producing light

Ex: The Perseid meteor shower is one of the most famous annual meteor showers, visible in August.
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meteorite
[noun]

a piece of rock or metal from space that has hit the surface of the earth

Ex: The study meteorites helps researchers understand the potential hazards of asteroids and comets .
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Nebula
[noun]

a glowing cloud of gas and dust in outer space, often the result of a star explosion or formation

Ex: The beautiful colors of the Eagle Nebula were captured by the space telescope.
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supernova
[noun]

an exploding star that as a result is emitting a very large amount of light, more than the sun

Ex: Supernovae release enormous amounts of energy, producing heavy elements essential for planetary formation.
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NASA
[noun]

a US government agency responsible for space travel and the study of space

Ex: NASA's Artemis program aims to return astronauts to the Moon and establish a sustainable lunar presence by the 2020s .
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mission
[noun]

an operation carried out in space

Ex: NASA 's Voyager spacecraft embarked on a mission to explore the outer planets of our solar system .
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cosmonaut
[noun]

an astronaut from Russia or the former Soviet Union

Ex: The Soviet Union launched several cosmonaut missions during the Space Race with the United States .
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(of a spacecraft or aircraft) to leave the ground, particularly vertically

Ex: The small experimental lifted off smoothly , its pilot eager to test its capabilities .
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axis
[noun]

an imaginary line in the middle of an object around which the object revolves

Ex: The rotation of planets around axes determines their day and night cycles .
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rotation
[noun]

the action of circular movement around a fixed point

Ex: rotation of tires on a vehicle ensures even wear and extends their lifespan .
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a vehicle designed and used to go to space and return multiple times

Ex: Endeavour was one of the space shuttles used for scientific research and satellite deployment missions.
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a mysterious object that some people claim to have seen flying around in the sky and assume that it is a spaceship from another world

Ex: The pilots reported encountering unidentified flying object that moved at high speeds and changed direction abruptly .
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weightless
[Adjective]

having or seeming to have no or little weight, caused by the absence of gravity

Ex: During a zero-gravity flight , passengers enjoy the sensation of weightless for short periods .
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