space crosswrd

12345678
Across
  1. 2. Clusters of interstellar gas and dust.
  2. 3. gas in the stars
  3. 4. group of stars physically bound by gravitation, formed under similar conditions in a relatively short time, and evolving under the same conditions.
  4. 6. stars at an advanced stage of evolution.
  5. 7. Star with a shiny core (head) and a gaseous trail (hair and tail), which describes an orbit in the shape of an ellipse around the Sun.
  6. 8. Very bright explosion that marks the end of the life of some stars; star in this stage.
Down
  1. 1. interstellar nebula which are the origin of the stars
  2. 5. region of space so dense that no radiation emerges.