Free Astronomy and Space MCQs with Answers
286 Astronomy and Space MCQs from Everyday Science, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Astronomy covers the structure and motions of the solar system, planets, satellites, comets, asteroids and meteoroids, together with gravity, eclipses, seasons and phases of the Moon. It also introduces stars, galaxies, nebulae, black holes, space telescopes and satellites, while distinguishing rotation from revolution and meteors from meteorites.
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286 questions · page 3 of 15
- A. 10
- B. 11
- C. 12
- D. 13
Explanation: Sunspot activity rises and falls in an approximately 11-year cycle, with periods of solar maximum and solar minimum.
Correct answer: 11- A. the photosphere, the leutosphere , and the corona
- B. the photosphere, the chromosphere, and the scislophere
- C. the photosphere, the chromosphere, and the corona
- D. None of the above
Explanation: The commonly identified visible layers of the Sun’s atmosphere are the photosphere, chromosphere and corona.
Correct answer: the photosphere, the chromosphere, and the corona- A. Cromosphere
- B. Leutosphere
- C. Thermosphere
- D. Photosphere
Explanation: The photosphere is the bright visible surface from which most of the Sun’s light appears to come. The chromosphere and corona lie above it.
Correct answer: Photosphere- A. Earth
- B. Mercury
- C. Sun
- D. Venus
Explanation: The Sun is a star whose gravity holds the planets and other bodies in the solar system in orbit. It lies at the system’s centre.
Correct answer: Sun- A. Coach
- B. Core
- C. Corona
- D. Comma
Explanation: The corona is the Sun’s extremely hot, thin outer atmosphere, extending millions of kilometres into space.
Correct answer: Corona- A. 105
- B. 107
- C. 109
- D. 111
Explanation: The Sun’s diameter is about 109 times Earth’s diameter, although its volume is roughly 1.3 million Earths.
Correct answer: 109- A. The sun
- B. The Moon
- C. The Earth
- D. Venus
Explanation: Comets are icy bodies that orbit the Sun, usually on highly elongated paths.
Correct answer: The sun- A. Crust
- B. Mental
- C. Core
- D. None of these
Explanation: The crust is Earth’s thin, rigid outermost layer, lying above the mantle and core.
Correct answer: Crust- A. Jupiter
- B. Venus
- C. Saturn
- D. Uranus
Explanation: Saturn currently has the greatest number of confirmed moons in the solar system.
Correct answer: Saturn- A. Apollo 1
- B. Sputnik
- C. Apollo II
- D. Voyager 1
Explanation: Voyager 1 crossed the heliopause and entered interstellar space in 2012, making it the first human-made object to do so.
Correct answer: Voyager 1- A. Paresh Dhawan Space Centre
- B. Satish Dhawan Space Centre
- C. Ram Dhawan Space Centre
- D. Shiri Dhawan Space Centre
Explanation: Chandrayaan-3 was launched from the Satish Dhawan Space Centre at Sriharikota, India.
Correct answer: Satish Dhawan Space Centre- A. Outer planets (Uranus and Neptune)
- B. Outer planets (Jupiter and Neptune)
- C. Outer planets (Jupiter and Saturn)
- D. Inner planets (Mercury and Earth)
Explanation: Uranus and Neptune are called ice giants because their interiors contain large amounts of water, ammonia and methane ices.
Correct answer: Outer planets (Uranus and Neptune)- A. Water, mercury and methane
- B. Water, ammonia and mercury
- C. Water, plasma and methane
- D. Water, ammonia and methane
Explanation: The principal volatile materials in the ice giants are water, ammonia and methane.
Correct answer: Water, ammonia and methane- A. Seliopause
- B. Meliopause
- C. Heliopause
- D. Beliopause
Explanation: The heliopause is the boundary where the outward pressure of the solar wind balances the pressure of the interstellar medium.
Correct answer: Heliopause55. The sun is expected to exhaust its hydrogen fuel in about 5 billion years. What will be its effect?
- A. The sun will then expand into a red giant and possibly swallow the outer planets
- B. The sun will then expand into a red giant and possibly swallow the inner as well as outer planets, including Earth
- C. The sun will then expand into a red giant and possibly swallow the inner planets, including Earth
- D. Sun will stay as it is
Explanation: After exhausting core hydrogen, the Sun is expected to expand into a red giant, probably engulfing or destroying the inner planets…
Correct answer: The sun will then expand into a red giant and possibly swallow the inner planets, including Earth- A. Dark matter is detected through its absorption effects
- B. Dark matter is detected through its gravitational effects on visible matter
- C. Dark matter is detected through its absorption and gravitational effects
- D. Dark matter cannot be detected
Explanation: Dark matter emits and absorbs little or no detectable light, so it is inferred from gravity, such as its effects on galaxy rotation and…
Correct answer: Dark matter is detected through its gravitational effects on visible matter- A. Dark matter interacts with electromagnetic force for very short duration
- B. Dark matter does not interact with electrostatic force
- C. Dark matter does not interact with electromagnetic force
- D. None of the aboveAstronomy
Explanation: Telescope images rely on electromagnetic radiation such as visible light, infrared or radio waves.
Correct answer: Dark matter does not interact with electromagnetic force- A. Persistence
- B. Desistance
- C. Perseverance
- D. None of the above
Explanation: NASA's Perseverance rover landed in Jezero Crater on Mars on 18 February 2021. The other names are not NASA Mars rover names.
Correct answer: Perseverance- A. Artemis
- B. Arshamedis
- C. Arsenimdo
- D. Bertonies
Explanation: Artemis is NASA's programme for returning humans to the Moon and preparing for later missions to Mars.
Correct answer: Artemis- A. Darker Solar Probe
- B. Walker Solar Probe
- C. Parker Solar Probe
- D. Falkner Solar Probe
Explanation: The Parker Solar Probe studies the Sun's corona and solar wind from closer than any previous spacecraft.
Correct answer: Parker Solar Probe