Astronomy and Space Science Mcqs Page 1

Astronomy and Space Science Mcqs

1- The study of celestial objects and phenomena is called:

A. Geology

B. Astronomy

C. Meteorology

D. Oceanography

View Answer

Answer : B. Astronomy

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2- The closest star to Earth is:

A. Sirius

B. Alpha Centauri

C. Sun

D. Betelgeuse

View Answer

Answer : C. Sun

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3- Which planet is known as the Red Planet?

A. Mars

B. Mercury

C. Venus

D. Jupiter

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Answer : A. Mars

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4- The largest planet in the Solar System is:

A. Jupiter

B. Saturn

C. Earth

D. Neptune

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Answer : A. Jupiter

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5- Which planet has a system of rings?

A. Venus

B. Mars

C. Jupiter

D. Saturn

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Answer : D. Saturn

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6- The planet closest to the Sun is:

A. Venus

B. Mercury

C. Earth

D. Mars

View Answer

Answer : B. Mercury

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7- The Earth completes one revolution around the Sun in:

A. 12 hours

B. 24 hours

C. 30 days

D. 365 days

View Answer

Answer : D. 365 days

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8- The Moon is a natural:

A. Comet

B. Planet

C. Satellite

D. Star

View Answer

Answer : C. Satellite

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9- Which is the largest moon of Jupiter?

A. Titan

B. Europa

C. Ganymede

D. Callisto

View Answer

Answer : C. Ganymede

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10- Which planet is known as the Morning Star or Evening Star?

A. Venus

B. Mercury

C. Mars

D. Saturn

View Answer

Answer : A. Venus

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11- A celestial body that orbits a planet is called:

A. Asteroid

B. Comet

C. Star

D. Moon or Satellite

View Answer

Answer : D. Moon or Satellite

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12- Which is the hottest planet in the Solar System?

A. Mercury

B. Venus

C. Mars

D. Jupiter

View Answer

Answer : B. Venus

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13- The asteroid belt is located between:

A. Mars and Jupiter

B. Jupiter and Saturn

C. Venus and Earth

D. Mercury and Venus

View Answer

Answer : A. Mars and Jupiter

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14- A small icy body with a tail that orbits the Sun is called:

A. Asteroid

B. Comet

C. Meteor

D. Satellite

View Answer

Answer : B. Comet

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15- The Sun is classified as a:

A. Red giant

B. White dwarf

C. Yellow dwarf

D. Neutron star

View Answer

Answer : C. Yellow dwarf

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16- The first human-made satellite to orbit Earth was:

A. Apollo 11

B. Sputnik 1

C. Hubble

D. Voyager 1

View Answer

Answer : B. Sputnik 1

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17- The speed of light in space is approximately:

A. 3 × 10⁶ m/s

B. 300 km/s

C. 3 × 10⁵ km/s

D. 3 × 10⁸ m/s

View Answer

Answer : D. 3 × 10⁸ m/s

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18- The study of the universe as a whole is called:

A. Cosmology

B. Astrobiology

C. Meteorology

D. Geology

View Answer

Answer : A. Cosmology

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19- The first man to walk on the Moon was:

A. John Glenn

B. Buzz Aldrin

C. Neil Armstrong

D. Yuri Gagarin

View Answer

Answer : C. Neil Armstrong

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20- Which telescope is famous for observing deep space objects?

A. Solar telescope

B. Refracting telescope

C. Hubble Space Telescope

D. Radio telescope

View Answer

Answer : C. Hubble Space Telescope

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