universe crossword 2

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Across
  1. 6. a recognized group of stars that appear to form a specific pattern or picture in the night sky, often named after mythological figures, animals, or objects
  2. 7. the streak of light—commonly called a "shooting star" or "falling star"—produced when a small piece of space debris (a meteoroid) enters Earth’s atmosphere at high speed
  3. 10. a massive, luminous sphere of plasma—primarily hydrogen and helium—held together by its own gravity, producing heat and light through nuclear fusion in its core
  4. 11. a regular, predictable arrangement
Down
  1. 1. the scientific study of celestial objects
  2. 2. an extremely long distance that is the distance light travels in 365 days
  3. 3. a collection of non-stellar celestial bodies
  4. 4. a gravitationally bound group of stars
  5. 5. an unmanned, robotic spacecraft designed to explore outer space
  6. 8. the curved path of an object around another object
  7. 9. the simplest and most abundant element
  8. 10. a reusable spacecraft designed by NASA (1981–2011) to transport crews and cargo between Earth and low Earth orbit
  9. 12. an imaginary or real straight line around which an object rotates, spins, or is symmetrically arranged