Physics ยท Science General

Astronomy and Cosmology

4,498 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

Which galaxy cluster is known for its gravitational lensing effect, creating multiple images of distant galaxies?

  1. Abell 2218

  2. Bullet Cluster

  3. Coma Cluster

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

Abell 2218, also known as the 'Einstein Cross', is a galaxy cluster that exhibits a strong gravitational lensing effect, resulting in multiple images of distant galaxies.

Multiple choice

What is the name of the supermassive black hole at the center of our Milky Way?

  1. Sagittarius A*

  2. M87*

  3. Ton 618

  4. Cygnus X-1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sagittarius A* is the supermassive black hole located at the center of our Milky Way galaxy.

Multiple choice

Which galaxy is known for its unusual shape, resembling a sombrero?

  1. Sombrero Galaxy

  2. Pinwheel Galaxy

  3. Whirlpool Galaxy

  4. Barred Spiral Galaxy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Sombrero Galaxy, also known as Messier 104, is a peculiar galaxy with a prominent dust lane and a bright central bulge, giving it the appearance of a sombrero.

Multiple choice

What is the name of the galaxy that is the most distant object ever observed?

  1. GN-z11

  2. J0313-1806

  3. HUDF-JD2

  4. EGSY8p7
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

GN-z11 is the most distant galaxy ever observed, located approximately 13.4 billion light-years away.

Multiple choice

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

  1. Cygnus A

  2. Centaurus A

  3. M87

  4. NGC 1275
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

M87 is a giant elliptical galaxy known for its active galactic nucleus and powerful radio jets.

Multiple choice

What is the name of the galaxy that is the largest in the local universe?

  1. IC 1101

  2. UGC 2885

  3. NGC 4889

  4. ESO 444-46
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IC 1101 is the largest galaxy in the local universe, spanning over 6 million light-years in diameter.

Multiple choice

Which galaxy is known for its unusual blue color, caused by the presence of young, hot stars?

  1. Blue Galaxy

  2. Starburst Galaxy

  3. Irregular Galaxy

  4. Dwarf Galaxy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Starburst galaxies are known for their intense star formation, resulting in a blue color due to the presence of young, hot stars.

Multiple choice

What is the name of the galaxy that is the closest to our Milky Way and is visible to the naked eye?

  1. Andromeda Galaxy

  2. Large Magellanic Cloud

  3. Small Magellanic Cloud

  4. Sagittarius Dwarf Galaxy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Large Magellanic Cloud is the closest galaxy to our Milky Way that is visible to the naked eye.

Multiple choice

Which galaxy is known for its unusual ring-like structure?

  1. Hoag's Object

  2. Cartwheel Galaxy

  3. Sombrero Galaxy

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

Hoag's Object is a peculiar galaxy with a bright central ring and a faint outer ring, giving it a distinctive appearance.

Multiple choice

What is the name of the galaxy that is the most massive in the known universe?

  1. IC 1101

  2. UGC 2885

  3. NGC 4889

  4. ESO 444-46
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IC 1101 is the most massive galaxy in the known universe, with an estimated mass of over 100 trillion times that of the Sun.

Multiple choice

Which galaxy is known for its unusual double nucleus?

  1. NGC 6240

  2. Arp 220

  3. Centaurus A

  4. M87
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

NGC 6240 is a peculiar galaxy with two distinct nuclei, each with its own supermassive black hole.

Multiple choice

What is the name of the galaxy that is the most luminous in the infrared spectrum?

  1. Arp 220

  2. IRAS F10214+4724

  3. NGC 1068

  4. M82
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

IRAS F10214+4724 is the most luminous galaxy in the infrared spectrum, emitting vast amounts of infrared radiation.

Multiple choice

What is the primary method used by Indian astronomers to study dark matter in the Local Group?

  1. Gravitational Lensing

  2. X-ray Observations

  3. Radio Astronomy

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

Indian astronomers primarily employ gravitational lensing techniques to study dark matter in the Local Group. By analyzing the distortion of light from distant galaxies due to the gravitational influence of dark matter, they can infer its presence and distribution.

Multiple choice

What is the estimated mass of the dark matter halo surrounding the Milky Way galaxy?

  1. 10^11 solar masses

  2. 10^12 solar masses

  3. 10^13 solar masses

  4. 10^14 solar masses
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The estimated mass of the dark matter halo surrounding the Milky Way galaxy is approximately 10^12 solar masses. This vast amount of dark matter plays a crucial role in shaping the dynamics and structure of our galaxy.

Multiple choice

What is the name of our galaxy?

  1. Milky Way

  2. Andromeda

  3. Sombrero Galaxy

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

The Milky Way is a barred spiral galaxy that contains our solar system.