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Essential Vocabulary for TOEFL - Space

Here you will learn some English words about space, such as "galaxy", "solar", "cosmic", etc. that are needed for the TOEFL exam.

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Essential Words Needed for TOEFL
universe

all that exists in the physical world, such as space, planets, galaxies, etc.

[noun]
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cosmos

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

[noun]
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galaxy

a large number of star systems bound together by gravitational force

[noun]
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astronomy

a branch of science that studies space, planets, etc.

[noun]
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the Milky Way

a pale band of light seen in the sky at night that contains the solar system and billions of other stars

[noun]
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solar system

the sun and the group of planets orbiting around it, including the earth

[noun]
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aerospace

the earth's atmosphere and the space beyond it

[noun]
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gravity

(physics) the universal force of attraction between any pair of objects with mass

[noun]
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astronomer

a scientist who studies or observes planets, stars, and other happenings in the universe

[noun]
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constellation

a specific group of stars that form a pattern and have a name related to their shape

[noun]
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solar

related to the sun

[Adjective]
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lunar

relating to the moon

[Adjective]
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big bang

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

[noun]
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black hole

a place in the space with such high gravity that pulls in everything, even light

[noun]
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comet

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

[noun]
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cosmic

related to the universe and the vast space outside the earth

[Adjective]
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meteor

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

[noun]
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meteorite

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

[noun]
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eclipse

a period during which the sun or the moon is shadowed by a dark circle

[noun]
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alien

a creature that is believed to exist in other worlds or planets

[noun]
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satellite

an object sent into space to travel around the earth and send or receive information

[noun]
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to orbit

to move around a star, planet, or a large object in space

[Verb]
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rotation

the action of circular movement around a fixed point

[noun]
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astronaut

someone who is trained to travel and work in space

[noun]
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spacecraft

a vehicle designed to travel in space

[noun]
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rocket

a jet engine with liquid or solid fuel that is propelled by a burning gas stream

[noun]
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mission

an operation carried out in space

[noun]
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to launch

to send an object, such as a satellite, missile, etc., into space

[Verb]
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countdown

the act of counting numbers backwards to zero before the launch of a missile or spacecraft

[noun]
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unidentified flying object

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

[noun]
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voyage

a long journey taken on a ship or spacecraft

[noun]
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NASA

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

[noun]
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light year

the distance that a beam of light travels in a year, equal to 9.46 trillion kilometers

[noun]
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ray

a narrow beam of light, heat, or other form of energy

[noun]
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