Aryabhatta to Gaganyaan

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Across
  1. 3. Ancient instrument used to observe stars
  2. 6. Force keeping planets and moons in motion
  3. 10. Explosion marking the death of a massive star
  4. 13. Artificial object placed in orbit
  5. 14. Hottest planet in the Solar System
  6. 16. The centre of the heliocentric system
  7. 17. Alignment of Sun, Earth, and Moon causing a shadow
  8. 18. Indian mission that discovered water on the Moon
  9. 19. Brightest star in the night sky
Down
  1. 1. India’s Mars Orbiter Mission
  2. 2. A celestial body orbiting a star
  3. 4. Path taken by a planet around the Sun
  4. 5. Rocky body orbiting the Sun, mostly between Mars and Jupiter
  5. 7. Instrument to observe distant celestial bodies
  6. 8. Famous space telescope launched in 1990
  7. 9. Astronomer who proposed heliocentric model
  8. 11. India’s first satellite, launched in 1975
  9. 12. India’s first human spaceflight mission
  10. 15. Constellation known as "The Hunter"
  11. 16. Ancient device for measuring time using shadows
  12. 20. Indian Space Research Organisation