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Rayfia [2]

Word List with 49 words
By Dictionary.com

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Words in This List

capricorn

the Goat, a zodiacal constellation between Sagittarius and Aquarius.

atmosphere

noun

the gaseous envelope surrounding a heavenly body

eclipse

noun

the obscuring of the light of the moon by the intervention of the earth between it and the sun, a lunar eclipse, or the obscuring of the light of the sun by the intervention of the moon between it and a point on the earth, a solar eclipse

phase

noun

the particular appearance presented by the moon or a planet at a given time

solstice

noun

either of the two times a year when the sun is at its greatest distance from the celestial equator that takes place about June 21 and about December 22

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companion

noun

the fainter of the two stars that constitute a double or binary star

system

noun

a number of heavenly bodies associated and acting together according to certain natural laws

satellite

noun

a natural body that revolves around a planet such as a moon

horizon

noun

the small circle of the celestial sphere whose plane is tangent to the earth at the position of the observer

constellation

noun

any of various groups of stars to which definite names have been given and the section of the heavens occupied by such a group, such as Ursa Major, Andromeda

star

noun

a celestial body with a mass of gas that is hot enough to produce and sustain nuclear fusion, thus producing luminosity

altitude

noun

the angular distance of a heavenly body above the horizon

eon

noun

one billion years

penumbra

noun

the partial or imperfect shadow outside the complete shadow of an opaque body, such as a planet, where the light from the source of illumination is only partly cut off

quarter

noun

one fourth of the moon's monthly revolution

alpha

noun

used to designate the brightest star in a constellation

crescent

noun

the figure of the moon in its first or last quarter, resembling a segment of a ring tapering to points at the ends

planet

noun

any of the nine large heavenly bodies revolving about the sun and shining by reflected light: a similar body revolving about a star other than the sun

galaxy

noun

a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space

meteor

noun

a transient fiery streak in the sky produced by a meteoroid passing through the earth's atmosphere also called a shooting star or bolide

nebula

noun

a cloud of interstellar gas and dust that appears hazy, or fuzzy, and extended in a telescope view

rotation

noun

the movement or path of the earth or a heavenly body turning on its axis

sidereal

adjective

determined by or pertaining to the stars

luminosity

noun

the brightness of a star in comparison with that of the sun: the luminosity of Sirius is expressed as 23 and indicates intrinsic brightness 23 times greater than the sun

Sagittarius

noun

a zodiacal constellation between Scorpius and Capricorn also called the Archer

summer solstice

noun

marking the time when the sun is at the north most point from the celestial equator occurring around June 21

Leo

noun

the Lion, a zodiacal constellation between Virgo and Cancer, containing the bright star Regulus

pulsar

noun

one of several hundred known celestial objects, generally believed to be rapidly rotating neutron stars, that emit pulses of radiation such as radio waves with a high degree of regularity

Sirius

noun

the Dog Star, the brightest-appearing star in the heavens, located in the constellation Canis Major

big bang theory

noun

a theory that deduces a cataclysmic birth of the universe from the observed expansion of the universe, cosmic background radiation, abundance of the elements, and the laws of physics

meteoroid

noun

any of the small bodies, often remnants of comets, traveling through space: when such a body enters the earth's atmosphere it is heated to luminosity and becomes a meteor

Gemini

plural noun

the Twins, a zodiacal constellation between Taurus and Cancer containing the bright stars Castor and Pollux

Taurus

noun

a zodiacal constellation between Gemini and Aries, containing the bright star Aldebaran also called the Bull

Pisces

noun

a zodiacal constellation between Aries and Aquarius also called the Fishes

Betelgeuse

noun

a bright red supergiant star in the constellation Orion