The Space-time Continuum

solstice

noun

/sɔls.tɪs/ or /sawls.tis/

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either of the two times of the year when the sun reaches its farthest or closest distance from the equator

bicentenary

noun

/baɪ.sɛn.tə.nɛ.ri/ or /bai.sen.tē.ne.ri/

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the specific day that an event turns 200 years old

centenary

noun

/sɛn.tə.nɛ.ri/ or /sen.tē.ne.ri/

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the day that an event becomes 100 years old

diurnal

Adjective

/daɪɜr.nəl/ or /daiēr.nēl/

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having a cycle that happens on a daily basis

epoch

noun

/ɛ.pək/ or /e.pēk/

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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

/ik.wə.nɑks/ or /ik.vē.naaks/

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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

millennial

Adjective

/mɪ.lɛ.niəl/ or /mi.le.niēl/

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relating to a time span of a thousand years

Greenwich Mean Time

noun

/ɡɹˈɛnɪtʃ mˈiːn tˈaɪm/

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the time as measured at Greenwich, London, on the line of 0° longitude, used to calculate the time across the globe

eventual

Adjective

/ə.vɛn.ʧuəl/ or /ē.ven.chooēl/

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happening at the end of a process or a particular period of time

in due course

Adverb

/ɪn dˈuː kˈoːɹs ɔːɹ tˈaɪm/

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Collocation

at the appropriate or expected time, without rushing or delay

to wane

Verb

/weɪn/ or /vein/

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(of the moon) to gradually decrease in its visible illuminated surface as it progresses from full to new moon

stratospheric

Adjective

/stræ.təs.fɪ.rɪk/ or /strā.tēs.fi.rik/

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the second layer of earth's atmosphere composed of cool and warm layers of air

space-time

noun

/ˈspeɪˌstaɪm/

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the theory that adds the notion of time to that of a three-dimensional space

orbital

Adjective

/ɔr.bə.təl/ or /awr.bē.tēl/

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relating to the path or motion of an object as it revolves around another object in space

Nebula

noun

/nɛb.jə.lə/ or /neb.yē.lē/

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

umbra

noun

/əmb.rə/ or /ēmb.rē/

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the part of a shadow that is completely dark; caused by acute light blockage

to wax

Verb

/wæks/ or /vāks/

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(of the moon) to progressively display a larger illuminated section until it turns into a full moon

meteorite

noun

/mi.tiɔ.raɪt/ or /mi.tiaw.rait/

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

magnetic storm

noun

/mæɡnˈɛɾɪk stˈoːɹm/

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a disruption in earth's magnetic field caused by solar activity, resulting in variations that can impact electronic systems and communications on earth

intergalactic

Adjective

/ɪn.tər.ga.læk.tɪk/ or /in.tēr.ga.lāk.tik/

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existing or occurring between galaxies

interplanetary

Adjective

/ɪn.tɜrp.læ.nə.tɛ.ri/ or /in.tērp.lā.nē.te.ri/

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existing or occurring between planets

interstellar

Adjective

/ɪn.tɜrs.tɛ.lɜr/ or /in.tērs.te.lēr/

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situated or occurring between stars or within the space that exists between stars

hyperspace

noun

/ˌhaɪpɝˈspeɪs/

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(specialist) space that consists of more than three dimensions

extraterrestrial

Adjective

/ɛkst.rə.tɜ.rɛst.riəl/ or /ekst.rē.tē.rest.riēl/

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relating to or originating from outside the Earth or its atmosphere

exoplanet

noun

/ɛ.gzɑ:p.la.nɛt/ or /e.gzaap.la.net/

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a planet that is outside the solar system

dark matter

noun

/dˈɑːɹk mˈæɾɚ/

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(physics) an invisible substance that makes up most of the universe's mass, detectable only through its gravitational effects

cosmic dust

noun

/kˈɑːzmɪk dˈʌst/

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very small particles originally derived from stars, serving as raw material for forming planets, and existing between galaxies, stars, and other celestial bodies

corona

noun

/kɜ.roʊ.nə/ or /kē.rooo.nē/

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the outer layer of the Sun's atmosphere, observable as a plasma halo during a solar eclipse

aurora australis

noun

/ɐɹˈoːɹə ɔːstɹˈɑːliz/

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the colored lights, mainly green and red, in the sky seen primarily near the southern magnetic pole

biosphere

noun

/baɪoʊ.sfɪr/ or /baiooo.sfir/

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a part of planet where the air, land, and water are suitable for all the living things to exist on

eon

noun

/iɑn/ or /iaan/

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an endless or lengthy period of time