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Essential Words Needed for the GRE - The Space-time Continuum
Here you will learn some English words about time and space, such as "spasmodic", "aeon", "millennial", etc. that are needed for the GRE exam.
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solstice
[noun]
either of the two times of the year when the sun reaches its farthest or closest distance from the equator
epoch
[noun]
a subdivision of a geologic period, characterized by distinctive and globally recognizable rock layers, fossils, and significant changes in Earth's climate and biota
equinox
[noun]
either of the two moments in a year when the Sun, in its apparent motion along the ecliptic, crosses the celestial equator, resulting in approximately equal periods of daylight and darkness worldwide
Greenwich Mean Time
[noun]
the time as measured at Greenwich, London, on the line of 0° longitude, used to calculate the time across the globe
to wane
[verb]
(of the moon) to gradually decrease in its visible illuminated surface as it progresses from full to new moon
stratospheric
[adjective]
the second layer of earth's atmosphere composed of cool and warm layers of air
space-time
[noun]
the Theory that adds the notion of time to that of a three-dimensional space
orbital
[adjective]
relating to the path or motion of an object as it revolves around another object in space
nebula
[noun]
a glowing cloud of gas and dust in outer space, often the result of a star explosion or formation
to wax
[verb]
(of the moon) to progressively display a larger illuminated section until it turns into a full moon
meteoroid
[noun]
a small celestial body that becomes visible as a meteor upon entrance into the atmosphere of the earth
meteorite
[noun]
a piece of rock or metal from space that has hit the surface of the earth
meteor
[noun]
a piece of rock coming from outer space that passes through the Earth's atmosphere, producing light
magnetic storm
[noun]
a disruption in earth's magnetic field caused by solar activity; resulting in variations and changes that can impact electronic systems and communications on earth
interstellar
[adjective]
situated or occurring between stars or within the space that exists between stars
extraterrestrial
[adjective]
relating to or originating from outside the Earth or its atmosphere
dark matter
[noun]
(physics) material existing in space that reflects no light, based on some theories
cosmic dust
[noun]
very small molecules serving as raw material for forming planets and they exist in between galaxies, stars, and etc.; originally derived from the stars
corona
[noun]
the outer layer of the Sun's atmosphere, observable as a plasma halo during a solar eclipse
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
aurora australis
[noun]
the colored lights, mainly green and red, in the sky seen primarily near the southern magnetic pole
aurora borealis
[noun]
the colored lights, mainly green and red, in the sky seen primarily near the northern magnetic pole
constellation
[noun]
a specific group of stars that form a pattern and have a name related to their shape
biosphere
[noun]
a part of planet where the air, land, and water are suitable for all the living things to exist on
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