solar system bodies

12345678
Across
  1. 3. is a system of two stars that are gravitationally bound and in orbit around each other.
  2. 5. is a planet that is too small to clean its atmosphere
  3. 6. a blinding fast projectile across the sky
  4. 8. they got their name because their cores have such powerful gravity that most positively charged protons and negatively charged electrons in the interior of these stars combine into uncharged neutrons.
Down
  1. 1. they are known as dark space) are vast spaces between filaments (the largest-scale structures in the universe), which contain very few or no galaxies.
  2. 2. a region of space having a gravitational field so intense that no matter or radiation can escape. neutron stars
  3. 4. a glowing ball of constantly spliced ions
  4. 7. an enormous cloud of dust and gas occupying the space between stars and acting as a nursery for new stars.