#1
2. What is the main force responsible for keeping celestial bodies in orbit?
#2
3. Which planet is known as the 'Red Planet'?
#3
13. What is the largest planet in our solar system?
#4
14. Who proposed the laws of motion and universal gravitation?
#5
17. Which galaxy is the closest to the Milky Way?
#6
19. Who developed the three laws of motion that describe the relationship between a body and the forces acting on it?
#7
23. What is the phenomenon where the Moon appears larger and brighter in the sky?
#8
1. Who formulated the laws of planetary motion?
#9
4. What is the name of the first artificial satellite launched into Earth's orbit?
#10
6. What is the term for the point in a celestial body's orbit where it is closest to the Sun?
#11
8. Which moon of Jupiter is known for its highly volcanic activity?
#12
10. Which comet is known for its highly elliptical orbit and returns approximately every 76 years?
#13
12. Which famous comet, named after its discoverer, is visible from Earth approximately every 76 years?
#14
15. What is the phenomenon where light from a celestial body is blocked by another passing in front of it?
#15
5. Which scientist proposed the heliocentric model of the solar system?
#16
7. Which astronomer first proposed the concept of black holes?
#17
9. Who discovered the law of universal gravitation?
#18
11. What is the primary source of energy for stars?
#19
18. What is the phenomenon where a planet appears to reverse its usual direction of motion in the sky?
#20
21. Which scientist proposed the theory of general relativity?
#21