1.How often, approximately, is Halley's Comet visible from Earth (in years)?

•    1. 25
•    2. 75
•    3. 140
•    4. 300
Halley's comet appears in the night sky approximately every 75 years. Its next appearance will be in 2061.

ANS. 75 

2. What astronomer placed Earth at the center of the universe?
•    1. Ptolemy
•    2.Galileo
•    3.Tycho Brahe
•    4.Aryabhata I
ANS. Ptolemy

3. Which astronomer wrote the Aryabhatiya?
•    1. Brahmagupta
•    2.Bhaskara I
•    3.Aryabhata I
•    4.Galileo

ANS. Aryabhata I

4. What astronomer suggested that the Sun was at the center of the solar system?
•    1. Copernicus
•    2. Hypatia
•    3. Ptolemy
•    4. Theon of Alexandria

ANS. Copernicus  
 

5. In On the Revolutions of the Celestial Orb, Nicholas Copernicus (1473–1543) suggested that Earth revolved around the Sun.
•     Who was the first astronomer to use a telescope?
•    1. Leonardo da Vinci
•    2. Galileo
•    3. Ptolemy
•    4. Hypatia

 ANS. Galileo

6. Which of the following is not a scientific optical instrument?
•    1. telescope
•    2. periscope
•    3. endoscope
•    4.microscope
A periscope allows the viewer to view objects not in the line of sight, such as around corners or above the surface of the water from below. It is best known for its use in military submarines.

ANS. Periscope

7. Which of these contain large quantities of ice?
•     1.asteroids
•     2.stars
•     3.comets
•     4.black holes

ANS. comets

8. What do most asteroids orbit?
•    1. Earth
•    2. Mars
•    3. the Sun
•    4.Pluto

ANS. the Sun 

9. Which of these planets has an atmosphere made up of hydrogen, helium, and methane?
•    1. Pluto
•    2. Uranus -ans
•    3. Earth
•    4. Venus

ANS. Uranus 

10. Which of these American astronomers discovered Pluto in 1930?

    1. Galileo Galilei

•    2. Harlow Shapley

•    3. Clyde Tombaugh

•    4. Edwin Hubble 

 ANS.Clyde Tombaugh 

11. Which of these constellations is not in the zodiac?

•         1. Aries
•    2. Alpha Centauri
•    3.Leo
•    4. Capricornus

Twelve well-known groups of stars, called constellations, lie in the zodiac. Their names are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpius, Sagittarius, Capricornus, Aquarius, and Pisces.

ANS. Alpha Centauri 

12. In what constellation is Sirius found?
•     1.Canis Major
•     2.Ursa Major
•     3.Ursa Minor
•     4.Andromeda

ANS. Canis Major 

13. About how many galaxies are there in the universe?
•   1.  25 million
•   2.  25 billion
•   3.  25 quadrillion
•   4.  25 gazillion

ANS. 25 billion  

14. Which of these is a galaxy?
•    1. Pluto
•    2. Ceres
•    3. Large Magellanic Cloud
•    4. Jupiter
The Large Magellanic Cloud is a very distant galaxy beyond our own.

ANS. Large Magellanic Cloud

15. How many light-years across is the Milky Way?
• 1.    1000
• 2.   10000
• 3.    100000
• 4.   1000000

ANS. 100000 

16. Which is the closest galaxy to Earth outside the Milky Way?
•   1.  Sombrero
•   2. Andromeda
•   3.  Antennae
•   4.  NGC 2770

 ANS.Andromeda

17. Space Application Centre (SAC) is located at

•   1.  Mumbai
•   2.  Ahmadabad
•   3.  Trivandrum
•   4.  None

ANS. Ahmadabad 

18. The first Indian Remote Sensing Satellite was launched into space on

•  1.   1984
•  2.   1989
•  3.   1988
•  4.   1990

ANS. 1990 

19. The code name of the first vehicle driven by man on the moon's surface was

•   1.Luna 22
•   2.Rover
•   3.Eagle
•   4.Challenger

ANS. Rover 

20. India's satellite launch-pad is located at

•       1.   Thumba
•  2.  Shri Hari Kota
•  3.  Ahmedabad
•  4.  Dehradun

ANS. Shri Hari Kota