Astronomy MCQs

Astronomy MCQs

These Astronomy multiple-choice questions and their answers will help you strengthen your grip on the subject of Astronomy. You can prepare for an upcoming exam or job interview with these 50+ Astronomy MCQs.
So scroll down and start answering.

1: Nearest star to the earth is _____.

A.   Alfa Centaury

B.   Sun

C.   Proxima Centaury

D.   Dog Star

2: Presently the farthest planet from the Sun is _____.

A.   Pluto

B.   Neptune

C.   Uranus

D.   Venus

3: Planet with maximum satellites is _____.

A.   Earth

B.   Saturn

C.   Jupiter

D.   Pluto

4: Which planet is called "red planet"?

A.   Mars

B.   Jupiter

C.   Mercury

D.   Venus

5: Which planet is called "Double Planet"?

A.   Venus

B.   Uranus

C.   Pluto

D.   Earth

6: Largest satellite in Solar System is ____.

A.   Moon

B.   Ganymede

C.   Europa

D.   Cheron

7: Sun-rays reaches earth in (approximately)

A.   8 seconds

B.   8 minutes

C.   4.3 seconds

D.   1 light year

8: Largest planet of our Solar System is _____.

A.   Jupiter

B.   Mars

C.   Saturn

D.   Uranus

9: Smallest planet of our Solar System is _____.

A.   Pluto

B.   Earth

C.   Venus

D.   Mercury

10: Brightest planet of our Solar System is _____.

A.   Venus

B.   Mercury

C.   Uranus

D.   Saturn

11: Hale Bopp is a newly discovered ____.

A.   Planet

B.   Meteore

C.   Satellite

D.   Comet

12: Charon is the satellite of _____.

A.   Earth

B.   Saturn

C.   Pluto

D.   Neptune

13: A family or system of millions and millions of stars are called ____.

A.   Universe

B.   Solar System

C.   Galaxy

D.   Asteroids

14: A system of millions and millions of galaxies are called _____.

A.   Solar System

B.   Universe

C.   Space

D.   Constellation

15: The name of our galaxy is _______

A.   A Alfa Centauri

B.   B Proxima Centauri

C.   C Milky Way

D.   D Neptune

16: What is the shape of our galaxy 'Milky Way'?

A.   spiral

B.   elliptical

C.   circular

D.   spherical

17: Orion and Great Bear stand for ______.

A.   star

B.   planet

C.   Solar System

D.   Constellation

18: Our Solar System is an orderly community of _____.

A.   One star

B.   Two stars

C.   Three stars

D.   Four stars

19: How many planets does our Solar System consist of?

A.   9

B.   6

C.   7

D.   10

20: The word 'planet' means ____.

A.   wanderer

B.   pollution

C.   celestial body

D.   heavenly body

21: A celestial body having its own heat and light is called

A.   Planet

B.   Moon

C.   Star

D.   Satellite

22: A celestial body which revolves round a planet just as a planet revolves round the Sun is called _____.

A.   A Moon

B.   B Asteroid

C.   C Satellite

D.   D Great Bear

23: A celestial body which revolves round the Sun and receives heat and light from it is called _____.

A.   Planet

B.   Orion

C.   Satellite

D.   Star

24: A swarm of small bodies in between the two Planets of Solar System is called 'asteroids' which are those two Planets?

A.   Mars and Jupiter

B.   Earth and Venus

C.   Neptune and Pluto

D.   Jupiter and Saturn

25: The word 'satellite' means _____.

A.   wanderer

B.   settlement

C.   light

D.   a smaller companion to anything

26: Big Bang Theory' explains

A.   The formation of universe

B.   The origin and evolution of earth's crust

C.   Formation of Solar System

D.   Formation of constellation

27: Sun revolves around galaxy once in every 250 million years, this length of time is called _____.

A.   Cosmic or Galactic Year

B.   Mean Solar Year

C.   Sidereal Year

D.   Leap Year

28: Planet nearest to the earth is _____.

A.   Venus

B.   Mercury

C.   Mars

D.   Jupiter

29: Planet with nearly equal rotation and revolution time to the earth is _____.

A.   Venus

B.   Mercury

C.   Uranus

D.   Mars

30: Earth ranks _____ in the Solar System away from the Sun.

A.   5th

B.   4th

C.   6th

D.   3rd

31: The sum of the characteristics that hold a mass in place is referred to as __________.

A.   Shear resistance

B.   170 km (105 mi)

C.   West Virginia

D.   Die of suffocation

32: The great contribution of nicholas copernicus was to _________.

A.   Discover the laws of planetary motion

B.   Discover the law of gravity

C.   Create a detailed model of our solar system with the Sun rather than Earth at the center

D.   Prove that the Earth is not the center of the universe

33: The interstellar clouds called molecular clouds are _______.

A.   The cool clouds in which stars form

B.   Opaque because of its internal dust grains

C.   Both of these

D.   None of these

34: The james webb space telescope is designed primarily to observe __________.

A.   UV Light

B.   Gamma rays

C.   Visible Light

D.   Infrared Light

35: The stars in our sky twinkle in brightness and color because of _________.

A.   Rapid changes in the brightnesses and colors of stars caused by changes in their spectra

B.   Turbulence in earth's atmosphere

C.   The bubbling and boiling of gases on the surfaces of stars

D.   Light pollution

36: The virgin galactic will soon _____.

A.   Offer rides into space

B.   Be launched beyond the solar system

C.   House people on Mars

D.   Send back data from the edge of the Milky Way

37: The sun reaches the zenith (directly overhead) at midday ___________.

A.   Everywhere in the Southern Hemisphere on the December solstice

B.   On the equator only on the March and September equinoxes

C.   On the Arctic circle (66.5°N) on the June solstice

D.   On the equator every day

38: The first humans arose ________ the last dinosaurs.

A.   More than 60 million years after

B.   About 100 million years after

C.   Almost immediately after the extinction of

D.   Shortly before the extinction of

39: We never see a crescent jupiter from earth because jupiter __________.

A.   Shines with its own light.

B.   Is farther than Earth from the Sun.

C.   Does not go around Earth.

D.   Orbits the Sun in the same direction as Earth.

40: Galileo challenged the idea that objects in the heavens were perfect by ________.

A.   Observing sunspots on the Sun and mountains on the Moon

B.   Showing that heavy objects fall at the same rate as lighter objects

C.   Inventing the telescope

D.   Proving Kepler's laws were correct

41: By examining the widths of the spectral lines we can find information about a star's _________.

A.   Parallax

B.   Lower

C.   Rotation

D.   Sequence

42: For los angeles, during the autumnal equinox there are about _____ hours of daylight.

A.   6

B.   9

C.   12

D.   15

43: If a star has a low luminosity and also a high surface temperature then it must have __________.

A.   A small radius

B.   A medium radius

C.   A large radius

D.   All the above sizes

44: If a star is large, it will remain in the main sequence _____ a small star.

A.   For

B.   As long

C.   As longer than

D.   Shorter than

45: Stars with masses less than ____ produce most of their energy via the proton-proton chain.

A.   0.1 solar masses

B.   1.101 solar masses

C.   0.01 solar masses

D.   1.1 solar masses

46: The area of the earth reached by a satellites transmission is referred to as its _____.

A.   Footprint

B.   Fishprint

C.   Geostationary

D.   Examine

47: The astrology practiced by those who cast predictive horoscopes can be tested by __________

A.   Comparing how often the predictions come true to what would be expected by pure chance.

B.   Asking astrologers if it works.

C.   Counting how many times the predictions come true

D.   Polling people to find out what percentage believe their horoscopes to be accurate.

48: A zero-age main-sequence star is one that can __________.

A.   Sustain thermonuclear reactions in its core.

B.   Converting hydrogen into helium

C.   More mass and a shorter lifetime

D.   Less mass and a longer lifetime

49: When we see a meteor shower, it means that ________.

A.   Earth is crossing the orbit of a comet

B.   The planet must be closer to the star than Earth is to the Sun.

C.   The Sun's mass is about 300,000 times the mass of the Earth.

D.   It is a little less than half the diameter of our Moon.

50: The axes on a hertzsprung-russell (h-r) diagram represent _________.

A.   Luminosity and surface temperature

B.   Mass and age

C.   Its size (radius)

D.   Larger than that of star b