C1级单词表 - Astronomy

the earth's atmosphere and the space beyond it

a branch of biology that deals with the study of life in space

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

related to the universe and the vast space outside the earth

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

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

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

(of the sun or moon) to go out of sight below the horizon

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

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

any natural object in the space, such as the sun, moon, etc.

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

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

(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

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

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

a planet that is outside the solar system

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

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

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

an operation carried out in space

an astronaut from Russia or the former Soviet Union

(of a spacecraft or aircraft) to leave the ground, particularly vertically

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

the action of circular movement around a fixed point

a vehicle designed and used to go to space and return multiple times

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

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