OUR UNIVERSE

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Across
  1. 5. THE ATMOSPHERE OF VENUS IS MAINLY MADE UP OF ____
  2. 6. MINOR PLANETS,ALSO CALLED PLANETOIDS
  3. 9. DENSEST PLANET IN THE SOLAR SYSTEM
  4. 10. SISTER PLANET OF EARTH
Down
  1. 1. RED COLOURED DUST OF MARS IS DUE TO THE PRESENCE OF THIS CHEMICAL
  2. 2. THE GALAXY WE LIVE IN
  3. 3. FASTEST SPINNING PLANET
  4. 4. PLANETS MADE UP OF GASES LIKE HYDROGEN AND HELIUM
  5. 7. SHAPE OF A PLANET'S ORBIT
  6. 8. SECOND LARGEST PLANET OF THE SOLAR SYSTEM