Here are the 30 questions on our Galaxy:
1. What is the name of our Galaxy?
2. What is the name of the Galaxy nearest to our Galaxy?
3. Study of Universe is known as ___?
4. How much time it takes for the sunlight to reach on Earth?
Ans: 8 minutes 20 seconds
5. How much time it takes for the reflected light from moon to reach on Earth?
Ans: 1.28 seconds.
6. Which is the smallest planet in our Galaxy?
7. Which planets have no natural satellites in our Galaxy?
Ans: Murcury and Venus
8. Which is called Blue Planet in our Galaxy?
9. Which is called Red Planet in our Galaxy?
10. Which is the biggest planet in our Galaxy?
11. Which planet is known as Morning Star or Evening Star in our Galaxy?
12. How much time Murcury takes to revolve around the Sun in our Galaxy?
Ans: 88 days
13. Which planet is known as spinning planet in our Galaxy?
14. Which planet’s density is maximum in our Galaxy?
15. Which planet has highest number of satellites in our Galaxy?
16. What is the shape of our Galaxy?
17. What is the age of the Universe?
Ans: 13.8 billions years
18. Planets around other stars are known as ____.
19. Which Galaxy is expected to collide with our Galaxy within 4 billion years?
Ans: Andromeda Galaxy
20. Which planets are known as Gas Giants?
Ans: Jupiter and Saturn
21. Which are the main gases exist in Jupiter and Saturn?
Ans : Hydrogen and Helium
22. Which planets are known as Ice Giants?
Ans: Uranus and Neptune
23. Closest approach to the Sun is called___?
Ans : Perihelion
24. The most distant point from the sun is called ___?
25. One astronomical unit is equal to ____km or ______mi?
Ans : 150,000,000 km or 93,000,000 km
26. How many natural satellites Mars and Earth have ?
Ans : Mars has two satellites and Earth has one satellite.
27. The substances present at the centre of the Sun is in ___state only.
Ans : Gaseous state
28. Which planet’s density is less than that of water ?
29. Which colour the sky will appear in absence of atmosphere?
Ans: Dark, Black
30. The innermost layer of the earth is known as ____?