Essential Science Vocabulary: Space Science

Whether you want to brush up on biology, study space science, or prep for a physics test, this collection of science vocabulary is for you! Our lists cover essential terms and concepts from all major scientific disciplines.
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Full list of words from this list:

  1. apogee
    the farthest point in an orbit around the Earth
  2. asteroid
    a small celestial body composed of rock and metal
  3. astronomy
    the branch of physics that studies celestial bodies
  4. atmosphere
    the envelope of gases surrounding any celestial body
  5. axis
    a straight line through a body or figure
  6. constellation
    a configuration of stars as seen from the earth
  7. comet
    a small frozen mass that travels around the sun
  8. corona
    the outermost region of the sun's atmosphere
  9. eclipse
    the phenomenon when one celestial body obscures another
  10. elliptical
    rounded like an egg
  11. galaxy
    a collection of star systems
  12. gravity
    the force of attraction between all masses in the universe
  13. luminosity
    the quality of emitting or reflecting light
  14. lunar
    of or relating to or associated with the moon
  15. meteor
    a mass that enters earth's atmosphere, becoming incandescent
  16. meteorite
    a stony or metallic object from space that hits the earth
  17. nadir
    the point below the observer directly opposite the zenith
  18. nebula
    an immense cloud of gas and dust in interstellar space
  19. observatory
    a building equipped to view astronomical phenomena
  20. orbit
    the path of a celestial body in its revolution about another
  21. perigee
    the nearest point in an orbit around the Earth
  22. pulsar
    a degenerate neutron star that emits polarized radiation
  23. quasar
    a starlike object that may send out radio waves
  24. solar
    relating to the sun or utilizing the energies of the sun
  25. solar system
    the sun with the celestial bodies that revolve around it
  26. stellar
    being or relating to or resembling or emanating from stars
  27. supernova
    a star that explodes and becomes luminous in the process
  28. vacuum
    the absence of matter
  29. wane
    decrease in phase
  30. zenith
    the highest point of something
Created on August 3, 2021 (updated August 3, 2021)

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