Physics ยท Science General

Astronomy and Cosmology

4,450 Questions

This topic provides questions on astronomy, cosmology, and the physical universe. It covers subjects like the Hubble sequence, constellations, dark matter, and stellar evolution. These questions help build a strong foundation for general science exam sections.

Galaxies and clustersConstellations and starsStellar evolutionSpace observatories

Astronomy and Cosmology Questions

Multiple choice

What is the term used to describe the chemical reactions that occur in the atmospheres of stars?

  1. Stellar chemistry

  2. Astrophysical chemistry

  3. Cosmochemistry

  4. Exochemistry
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Stellar chemistry focuses on the chemical reactions and processes that take place within the atmospheres of stars.

Multiple choice

Which of the following is NOT a type of astronomical spectroscopy?

  1. Emission spectroscopy

  2. Absorption spectroscopy

  3. Doppler spectroscopy

  4. Photometry
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Photometry is the measurement of the intensity of light, while spectroscopy is the study of the interaction of light with matter.

Multiple choice

What is the most common type of galaxy featured on stamps?

  1. Spiral

  2. Elliptical

  3. Irregular

  4. Lenticular
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Spiral galaxies are the most common type featured on stamps, due to their visually striking and recognizable shape.

Multiple choice

Which galaxy is often referred to as the "Whirlpool Galaxy"?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Messier 81

  4. Messier 101
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Messier 101, also known as the "Pinwheel Galaxy" or "Whirlpool Galaxy", is a spiral galaxy known for its prominent spiral arms.

Multiple choice

What is the name of the largest galaxy in the observable universe?

  1. IC 1101

  2. UGC 2885

  3. NGC 4889

  4. SDSS J1150+1122
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IC 1101, also known as the "Hyperion Galaxy", is the largest known galaxy in the observable universe, with a diameter of approximately 4 million light-years.

Multiple choice

Which galaxy is the closest major galaxy to the Milky Way?

  1. Andromeda Galaxy

  2. Triangulum Galaxy

  3. Large Magellanic Cloud

  4. Small Magellanic Cloud
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Andromeda Galaxy, also known as Messier 31, is the closest major galaxy to the Milky Way, located approximately 2.5 million light-years away.

Multiple choice

What is the name of the galaxy that contains our solar system?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Triangulum Galaxy

  4. Large Magellanic Cloud
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Milky Way Galaxy is the galaxy that contains our solar system and is home to billions of stars, including our Sun.

Multiple choice

Which galaxy is known for its distinctive barred spiral structure?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Messier 81

  4. Messier 101
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Messier 81, also known as "Bode's Galaxy", is a barred spiral galaxy known for its prominent bar structure across its center.

Multiple choice

What is the name of the galaxy that is often referred to as the "Sombrero Galaxy"?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Messier 81

  4. Messier 104
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Messier 104, also known as the "Sombrero Galaxy", is a spiral galaxy known for its prominent dust lane that resembles a sombrero hat.

Multiple choice

Which galaxy is known for its active galactic nucleus and powerful radio emissions?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Cygnus A

  4. Centaurus A
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cygnus A is a radio galaxy known for its powerful radio emissions and active galactic nucleus, which is a region of intense energy output at the center of the galaxy.

Multiple choice

What is the name of the galaxy that is often referred to as the "Cartwheel Galaxy"?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Messier 81

  4. Messier 90
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Messier 90, also known as the "Cartwheel Galaxy", is a ring galaxy with a distinctive wheel-like structure, resulting from a collision between two galaxies.

Multiple choice

Which galaxy is known for its prominent dust lanes and star-forming regions?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Messier 81

  4. Messier 101
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Messier 101, also known as the "Pinwheel Galaxy" or "Whirlpool Galaxy", is known for its prominent dust lanes and star-forming regions, giving it a distinctive spiral structure.

Multiple choice

What is the name of the galaxy that is often referred to as the "Black Eye Galaxy"?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Messier 81

  4. Messier 104
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Messier 104, also known as the "Sombrero Galaxy", is often referred to as the "Black Eye Galaxy" due to its prominent dust lane that resembles a dark eye at the center of the galaxy.

Multiple choice

Which galaxy is known for its distinctive elliptical shape and lack of prominent spiral arms?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Messier 81

  4. Messier 104
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Messier 104, also known as the "Sombrero Galaxy", is known for its distinctive elliptical shape and lack of prominent spiral arms, giving it a smooth and symmetrical appearance.

Multiple choice

What is the name of the galaxy that is often referred to as the "Tadpole Galaxy"?

  1. Andromeda Galaxy

  2. Milky Way Galaxy

  3. Messier 81

  4. Messier 101
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Messier 101, also known as the "Pinwheel Galaxy" or "Whirlpool Galaxy", is often referred to as the "Tadpole Galaxy" due to its distinctive tail-like structure, which is thought to be the result of a past interaction with another galaxy.