Essential Vocabulary for TOEFL - Space

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

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

a large number of star systems bound together by gravitational force

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

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

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

the earth's atmosphere and the space beyond it

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

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

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

related to the sun

relating to the moon

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

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

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

related to the universe and the vast space outside the earth

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

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

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

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

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

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

the action of circular movement around a fixed point

someone who is trained to travel and work in space

a vehicle designed to travel in space

an operation carried out in space

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

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

a long journey taken on a ship or spacecraft

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

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