Space Vocabulary

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Across
  1. 5. A natural (for example, the Moon) or artificial (for example, the Hubble Space Telescope) object that orbits around another object in space
  2. 7. The most widely accepted and used civil calendar internationally
  3. 13. The range of frequencies over which electromagnetic radiation extends (from radio waves to gamma waves)
  4. 15. The total amount of matter in an object
  5. 18. The basic idea is that instead of being invisible force that attracts objects to one another, gravity is a curving or warping of space.
  6. 19. All existing matter and space as a whole
  7. 20. The collection of eight planets and their moons in orbit around the sun, together with smaller bodies and asteroids, meteoroids and comets
Down
  1. 1. A Celestial body moving in an elliptical orbit around a star
  2. 2. A fixed luminous point in the night sky which is a large incandescent remote body like the sun
  3. 3. A method for reducing all measurements by the same amount to achieve the proportions of the scale model
  4. 4. The curved path of one object, such as a planet or Moon, around a central object, such as a star or planet; (verb) to move in a circular or elliptical path around a central object
  5. 6. An optical instrument that makes distant objects appear larger and brighter using lenses or curved mirrors. Any instrument, such as a radio telescope, for collecting, focusing and detecting electromagnetic radiation from space.
  6. 8. The distance that light travels in one year
  7. 9. A large system of dust, gas, stars, and other celestial bodies that has a particular shape.
  8. 10. A Celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classified as such.
  9. 11. A celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the Sun.
  10. 12. a natural satellite of any planet
  11. 14. The branch of science that studies that stars, planets, and other objects in space.
  12. 16. The region of interplanetary space between the orbits of Mars and Jupiter in which most asteroids are found.
  13. 17. An imaginary line that runs through the middle of an object around which that object rotates: a line at the side or bottom of a graph.