Shubhang

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Across
  1. 2. any one of the objects in space that are made of burning gas and that look like points of light in the night sky
  2. 4. a straight line from one side of something (such as a circle) to the other side that passes through the center point
  3. 5. all of space and everything in it including stars, planets, galaxies, etc.
  4. 8. The NASA Hubble Space Telescope is a project of international cooperation between NASA and ESA.
  5. 10. any one of thousands of small planets that circle around the sun.
  6. 11. the galaxy that includes our Solar System
  7. 13. an invisible area in outer space with gravity so strong that light cannot get out of it — often used figuratively
  8. 14. an object in outer space that develops a long, bright tail when it passes near the sun
  9. 15. unit of distance equal to the distance that light travels in one year (about 5.88 trillion miles or 9.46 trillion kilometers)
  10. 16. a huge explosion that might have happened when the universe began
Down
  1. 1. the curved path that something (such as a moon or satellite) follows as it goes around something else (such as a planet)
  2. 2. our sun and the planets that move around it
  3. 3. the natural force that tends to cause physical things to move towards each other : the force that causes things to fall towards the Earth
  4. 6. any one of the very large groups of stars that make up the universe
  5. 7. A group of stars that forms a particular shape in the sky and has been given a name
  6. 9. a large, round object in space (such as the Earth) that travels around a star
  7. 12. the smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule