Because they live in a very dynamic planetary system and achieved spaceflight at an early stage, the Vulcans have an extensive knowledge of astronomy and astrophysics. They have greatly added to the UFP's knowledge of the universe and planetary systems.

Some examples of Golic Vulcan vocabulary in these fields:

Accretion disk -- fito'ov-mathra
Achondrite -- kzanok
Aerolite -- kov-tevlak
Aerologist -- sov-talsu
Aerology -- sov-tal
Air (n.) -- sov
Albedo -- ha'gel-haulan-tavat
Antimatter (antimatière, Antimaterie, antimateria, αντιύλη, антивещество, 反物质, 반물질, 反物質, etc.) -- tehn-tukh
Aphelion -- yel-irak-sfek
Apoapsis -- dan-irak-sfek |s'stukhut|
Apogee -- dan-irak-sfek |s'Terra|
Artificial satellite -- sutor-aikum
Artificial wormhole -- sutor-stukh-riur
Ascending node -- sheyan-sfek
Asteroid -- pi'ek'tra
Astrogeologist -- s'udish-solektra-talsu
Astrogeology -- s'udish-solektra-tal
Astronomer -- yel-talsu
Astronomy (astronomie, astronomia, astronomi, αστρονομία, астрономия, 天文学, 천문학, etc.) -- yel-tal
Astrophysicist -- stukh-talsu
Astrophysics -- stukh-tal
Atmosphere -- sovtra, igen-tukh (obs.)
Atmospheric motion -- sov-dvun
Atmospheric pressure -- sov-vihish
Atmospheric water -- sov-masu-nakh
Atom -- galu
Atomic mass -- galu-shivak
Atomic number -- galu-su'us
Atomic structure -- galu-velek
Atomic transmutation -- galu-mesurubah
Atomic weight -- galu-rasath
Attraction -- skamaya
Aurora -- igen-gellar
Automatic camera -- shati-glayek
Automatic control -- shati-tash|ek|
Automatic exposure -- shati-sashavaya
Automatic shutter -- shati-ha'wein
Azimuth -- ir-zehl-kes

Band (n.) -- zhel
Baryon -- pu'gal
Binary planet -- dah-ek'tra
Binary star -- dah-yel
Biosphere -- ha-ek'shal
Black hole -- stukh-wak-razh; pash-yel
Blow up (v., explode) -- thorshau
Blurred, Blurry -- zihik
Bolide -- thorsha-tevlak
Boundary -- krup
Burn out (v.) -- yontau-pehkau
Bussard collector -- tershayek t'Bussard

Camera -- glayek
Carbon dioxide -- dah-eshu t'nol-tukh
Carbon monoxide -- eshu t'nol-tukh
Carbon star -- nol-tukh-yel
Center of gravity -- nu-seshan-svitan
Center of mass -- shivak-svitan
Center of rotation -- danan-svitan
Characteristic (n.) -- noshtra
Chart -- besan (n.); besau (v.)
Chroniton -- wak'gal
Circular (adj.) -- raf-kuv-, raf-kuvik
Circular orbit -- raf-kuvik pa-yut
Circumplanetary space -- pa-ek'tra-stukh
Circumstellar habitable zone (CHZ) -- ha'kiv-shal t'pa-yel
Circumterrestrial space -- pa-terra-stukh
Clarke belt -- Klark-zhel
Class A star -- yel t'Mohrn-A
Class B star -- yel t'Mohrn-B
Class F star -- yel t'Mohrn-F
Class G star -- yel t'Mohrn-G
Class K star -- yel t'Mohrn-K
Class M star -- yel t'Mohrn-M
Class O star -- yel t'Mohrn-O
Classification -- mohrnaya
Climate -- ek'nosh
Climatologist -- ek'nosh-talsu
Climatology -- ek'nosh-tal
Cloud cover -- wan-wein
Coelostat -- irak-zan-vel t'wak-vel-haulat
Collision -- terkwul
Comet -- zehl-yel
Constellation -- yel-nel-dath
Continent -- ek'kovtra
Convection -- da-kuv-falek'es
Corona -- pau
Cosmic dust -- stukh-grazhiv
Cosmic rays -- stukh-zehllar
Cosmologist -- stukhtra-talsu
Cosmology -- stukhtra-tal
Cosmos -- stukhtra
Crack (n.) -- treshaya
Crater -- kwul-razh (impact), zul-razh (volcanic)
Crevice -- treshaya
Crust (n.) -- si-kov-shal
Cryogeyser -- sposh-vel t'fal-masu
Cryosphere -- le-suma-ek'shal
Cryovolcanic dome -- sposh-ub t'le-sumal-masu
Cryovolcanism -- sposhan'es t'le-sumal-masu
Cryovolcano -- sposh-vel t'le-sumal-masu

Dark matter -- mu'gel-tukh
Debris -- guhsh|-tukh|
Density -- ihn'es
Descending node -- tevyan-sfek
Deuterium -- dah-masu-tukh
Differentiated planet -- natilal-ek'tra
Dilithium -- dah-pim-tukh
Disc -- mathra
Dwarf planet (planète naine, planeta enano, Zwergplanet, карликовая планета, كوكب قزم, 矮行星, 왜소행성;矮小行星, 準惑星, etc.) -- kob-ek'tra
Dwarf star -- kob-yel
Dyson sphere -- ek'kal t'Daison

Earth (planet) -- Terra
Eccentric orbit -- risvitan-pa-yut
Eccentricity -- risvitan'es
Eclipse (n.) -- ek'duv
Ecliptic -- ek'duv-pa'ashtra
Electron -- u'gal
Ellipse -- yuv
Elliptical -- yuv-, yuvik
Elongated (adj.) -- wuval-, wuvalik
Empty space -- herbosh-stukh
Energy -- tepul
Entropy -- tehnesaya
Environment -- ek'sitra
Equator -- dahs-da-kuv
Equatorial orbit -- dahs-da-kuvik pa-yut
Equidistant -- ka-ir-, ka-irik
Equilibrium -- vo'ektilahr
Escape energy -- stron-tepul
Escape velocity -- stron-threshan
Eternity -- ek'wak'es
Evaporation -- na-sovaya
Event -- pavek
Event horizon -- pash-yel-krup
Exobiologist -- s'udish-ha-talsu
Exobiology -- s'udish-ha-tal
Exosphere -- si-ek'shal
Exotic matter -- ritsuri-tukh
Explanation -- danaya
Exploration -- paglayaren
Explosion -- thorshaya
Exposure -- sashavaya

Fission (atomic) -- galu-dahshaya
Fluorescence -- sau-ha'tanaya
Fumarole -- fal-pa-razh
Fusion (atomic) -- galu-kaunshaya

Galactic circle -- yel-halek-kuv
Galactic coordinate -- yel-halekik shi-kethel
Galactic plane -- yel-halek-pa'ashtra
Galactic rotation -- yel-halek-dan
Galaxy -- yel-halek
Gas -- pa-tukh
Gas giant (planet) -- masuk pa-tukh-ek'tra
Geostationary orbit -- ka-truhkik pa-yut
Geosynchronous orbit -- ka-gadik pa-yut
Geyser -- masu-pohshuk
Globe -- ek'tra-dukal
Globular cluster -- dukal-yel-travek
Gravimetric shear -- seshilan-eitaya
Gravitation -- seshlanupaya
Gravitational wave -- seshlanu-pral
Graviton -- sesh'gal
Gravity -- nu-seshan
Gravity assist -- nu-seshan-golan
Gravity wave -- nu-seshan-pral
Greenhouse effect -- kastik-kel-daya
Greenhouse gas -- pa-tukh t'falek-pash

Habitat -- ha'ayek
Heliocentric -- yel-svitanyalik
Heliopause -- yel-dau-krup
Heliosphere -- yel-dau-shal
Helium -- tahal-tukh
Hohmann orbit -- Homan-pa-yut
Horizon -- ir-zehl
Hydrogen -- esh-tukh
Hypervelocity impact -- kwul t'dan-pid-threshan

Inclination -- vulat
Instability -- rifihet'es
Interferometer -- vath-yut-thonek
Intergalactic space -- sva-yel-halekik stukh
Intergalactic travel -- sva-yel-halekik halovaya
Interstellar space -- sva-yel-stukh
Interstellar travel -- sva-yel-halovaya
Ion -- falun-krus
Ionization -- falun-shetaya
Ionosphere -- falun-shetau-ek'shal

Kuiper belt -- vel-zhel t'Kaipuhr

Lagrangian orbit -- pa-yut t'Lagreinzh
Lagrangian point -- fek t'Lagreinzh
Latitude (geog.) -- truhk|-zehl|
Lava -- zul
Light speed -- ha'gel-hal-threshan
Light time -- ha'gel-hal-wak
Light year -- ha'gel-hal-gad
Lightning - igen-wesh
Lithosphere -- kov-ek'shal
Longitude (geog.) -- wut|-zehl|
Luminescence -- dakh-ha'tanaya
Lunar regolith -- |lunupik| aikum-solek

Magma -- tvi-zul
Magnetic -- seshupik
Magnetic field -- seshan-vunai
Magnetic field intensity -- karik'es t'seshan-vunai
Magnetometer -- seshan-thonek
Magnetosphere -- seshan-ek'shal
Main sequence star -- nel-zehlanaya-yel
Major planet -- mortu-ek'tra
Mantle -- tvi-kovtra
Matter (n.) -- tukh
Mesosphere -- svitan-sov-ek'shal
Meteor -- stukhlak, wesh-kov (obs.)
Meteor shower -- stukhlak-tevan, wesh-kov-tevan (obs.)
Meteorite -- tevlak, igen-kov (obs.)
Methane -- keh-masunol-tukh
Minor planet -- tenu-ek'tra
Molecule -- galutravek
Moon -- aikum
Moonrise -- aikum-shen
Moonset -- aikum-tevan

Near-Earth asteroid -- pi'ek'tra t'be-Terra
Near-Earth object -- vel t'be-Terra
Nebula -- stukh-wan
Nadir -- dan-nuk-sfek (lowest point); kahr-nu (directly down)
Negative charge -- u'rak-falun
Neutrino -- ska'gal
Neutron -- ta'gal
Nitrogen -- sov-tukh
Nova -- thorsha-yel

Observatory -- shi'igen-glantaya
Oort Cloud -- Ort-Wan
Open cluster -- tu'a-yel-travek
Orbit -- pa-yut (n.); pa-yutau (v.)
Outgassing -- s'pataya
Oxygen -- esh-tukh

Penumbra -- pi'duv
Periapsis -- dan-be-sfek |s'stukhut|
Perigee -- dan-be-sfek |s'Terra|
Perihelion -- yel-be-sfek
Physicist -- tor-talsu
Physics -- tor-tal
Planet -- ek'tra
Planetarium -- shi'yel-gluvekh
Planetologist -- vath-ek'tra-talsu
Planetology -- vath-ek'tra-tal
Plasma -- snazh
Polaron -- na'gal
Positive charge -- a'rak-falun
Positron -- a'gal
Pressure (n.) -- vihish
Prograde (adj.) -- |ek'tra-|da-kharatik
Protostar -- fu-yel
Pulsar -- spol-yel

Quasar -- kweizar, yelket

Radiation -- galu-saya
Radioactivity -- galu-saya'es
Red dwarf -- yon-kob-yel
Red giant -- yon-masuk-yel
Reflection -- haulan
Refraction -- ha'zehl-vulaya
Research -- kla-hil (n.), kla-hil-tor (v.)
Research facility -- kla-hil-kebitra
Researcher -- kla-hilsu
Resolution -- tahmoh
Retrograde (adj.) -- mesyut-kharatik
Rim (n.) -- rihbru
Ring (n.) -- mokuv
Ring system -- mokuv-torektra
Robot -- sutor-zupek
Rock (n., stone) -- kov
Rocket (n.) -- yon-hashek

Satellite -- sutor-aikum (artificial); malat-aikum (natural)
Science -- ek'tal
Scientific -- ek'tal-, ek'talik
Scientific method -- ek'tal-tikap
Scientist -- ek'talsu
Selenologist -- aikum-talsu
Selenology -- aikum-tal
Separation -- dahshaya
Shepherd moon -- mokuv-aikum
Sky -- igen
Solar activity -- yel-toran
Solar array -- yel-raf-zehlaya
Solar constant -- yel-ek'kat
Solar eclipse -- ug'yel-ek'duv
Solar flare -- yel-pohshaya
Solar panel -- ug'yel-raf-math
Solar prominence -- yel-sposhan
Solar sail -- yel-salan-thalv
Solar system -- yel-pi'maat
Solar wind -- yel-salan
Solid -- huht-, huhtik (adj.); huht (n.)
Solidify -- huhtkau
Solstice -- yel-be-wak
Space, Outer -- stukh
Spectral line -- kurtra-zehl
Spectrogram -- kurtra-bes
Spectrograph -- kurtra-besek
Spectrometer -- kurtra-thonek
Spectroscope -- kurtra-zan-vel
Speed of light -- ha'gel-threshan
Stability -- fihet'es
Star (n.) -- yel
Stellar cartography -- besaya t'yellar
Stratosphere -- pid-sov-ek'shal
Subspace (n.) -- ne-stukh
Sun -- yel
Sunrise -- gad-shen
Sunset -- gad-tevan
Sunspot -- yel-ulidar
Supernova (n.) -- khrash-yel
Synchronous orbit -- teretuhal-pa-yut

Tachyon -- sahr'gal
Tektite -- makh-vihk
Telescope (n.) -- irak-zan-vel
Temperature -- falek'es
Terraform -- ha'kiv-yehat-mesuvulau |ek'tra|
Terraforming -- ha'kiv-yehat-mesuvulaya |ek'tra|
Terrestrial planet -- Terra-kahk-ek'tra
Thermometer -- falek-thonek
Thermosphere -- si-falek-ek'shal
Time dilation -- wak-eiksharu
Trajectory -- vuluhaya
Troposphere -- igen-va-ek'shal

Umbra -- duv

Vacuum (n.) -- ek'ri'es
Van Allen Belt -- Vahn-Ahluhn-Zhel
Venting (n.) -- sakraun
Vortex -- tchef
Vulcan (planet) -- T'Khasi

Weather -- igen-va
Weightless -- rasath-fam-, rasath-famik
Weightlessness -- rasath-fam'es
White dwarf -- wan-kob-yel
World -- ek'tra, panu
Wormhole -- stukh-riur

X-ray telescope -- vak-zehlik zan-vel
X-rays -- vak-zehllar
Xenobiologist -- akan-ha-talsu
Xenobiology -- akan-ha-tal

Zenith -- dan-pid-sfek (highest point), kahr-abu (directly up)
Zero gravity (Zero-G) -- ek'ri-nu-seshan
Zone -- shal

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