1. Who introduced geocentric theory?
Answer :- Ptolemy
2. Who proposed heliocentric theory?
Answer :- Copernicus
3. Who proposed laws of planetary
motion?
Answer :- Kepler
4. Who discovered Telescope?
Answer :- Hans Lippershey
5. Who discovered Astronomical
Telescope?
Answer :- Galileo
6. Escape velocity from earth
is:
Answer :- 11.2km/s
7. Which year was celebrated as
International Year of Astronomy by UNO?
Answer :- 2009
8. How many planets are present in
the solar system?
Answer :- 8
9. Which is the smallest planet in
the solar system?
Answer :- Mercury
10. Which is the largest planet in
the solar system?
Answer :- Jupiter
11. Which is the largest satellite
in the solar system?
Answer :- Ganymede
12. Which is the smallest satellite
in the solar system?
Answer :- Deimos
13. Solar system belongs to which
galaxy?
Answer :- Milky way
14. Escape velocity from the solar
system is:
Answer :- 13.6 km/s
15. Escape velocity from the moon is:
Answer :- 2.3 km/s
16. Matter exists in a star in the
state:
Answer :- Plasma
17. The only one natural satellite
of earth is:
Answer :- Moon
18. Which satellite is called black
moon?
Answer :- Phobos
19. Who measured perimeter of earth
at first?
Answer :- Eratosthenes
20. Which planet is called 'Tera'?
Answer :- Earth
21. Who introduced the concept of
geostationary orbits for communication satellite?
Answer :- Arthur .C. Clerk
22. Cape Kennedy satellite launching
centre is situated at:
Answer :- Florida
23. The planet which is adjacent to
the sun is:
Answer :- Mercury
24. The planet which is known as
'red planet' is:
Answer :- Mars
25. Minerals which gives red colour
to the soil on mars is:
Answer :- Iron
26. Which is the densest planet?
Answer :- Earth
27. Which is the least dense planet?
Answer :- Saturn
28. Which planet reflects sunlight
most?
Answer :- Venus
29. The planet which is adjacent to
earth:
Answer :- Venus
30. 'Luna' is the Latin name of:
Answer :- Moon
31. Time required for light to reach
earth's surface from sun is:
Answer :- 500 seconds
32. Time required for light to reach
earth's surface from sun is:
Answer :- 1.3 seconds
33. ISRO is established in the year:
Answer :- 1969 October 2
34. Which type of galaxy is our
galaxy, 'milky way'?
Answer :- Spiral galaxy
35. One light year is equal to:
Answer :- 101akhcrore km
36. One par second is equal to:
Answer :- 3.26 light year
37. Who wrote the book, 'On the
revolution of the celestial bodies'?
Answer :- Copernicus
38. Who wrote the book, 'Harmonies
of the world'?
Answer :- Kepler
39. "Almagest", is the
book written by:
Answer :- Ptolemy
40. Who discovered the planet,
"Uranus"?
Answer :- William Herschel
41. Who used the name
"Galaxy" first?
Answer :- William Herschel
42. The planet which rotates from
east to west?
Answer :- Venus
43. The distant planet which can be
seen by naked eyes is:
Answer :- Saturn
44. Who discovered that Saturn
possesses rings around it?
Answer :- Galileo
45. Largest satellite of Saturn is:
Answer :- Titan
46. Which planet is called
"rolling planet "?
Answer :- Uranus
47. Which planet's satellites have
the name of Shakespeare's players?
Answer :- Uranus
48. Who discovered the planet,
Neptune?
Answer :- John Gale
49. "A small companion" is
the meaning of the name:
Answer :- Satellite
50. Which satellite revolves in the
opposite direction of its planet's rotation?
Answer :- Triton
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