Myles’s cosmic crossword

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Across
  1. 4. First name of the second man on the moon
  2. 5. An icy body made of gases rock and dust
  3. 6. A Russian person who goes to space
  4. 8. Event where the moon covers the sun.
  5. 9. Closest star to Earth
Down
  1. 1. First living thing in space
  2. 2. An area space where nothing can escape
  3. 3. Theoretical tunnel through space time
  4. 7. Powerful luminous explosion of a star