Space Vocabulary

12345678
Across
  1. 3. a collection of planets, moons, and other objects that orbit a sun
  2. 4. the distance light travels in one year
  3. 5. a ball of very hot gas that gives off electromagnetic radiation
  4. 6. the total amount of energy an object produces as light
  5. 7. the study of outer space, including the stars and planets
Down
  1. 1. a huge system of stars, dust, and gas held together by gravity
  2. 2. a group of stars that forms a pattern
  3. 8. the curved path that an object takes around a central body, like a planet, moon, or star, due to gravity