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 Veil Nebula?

  1. An emission nebula

  2. A reflection nebula

  3. A dark nebula

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

The Veil Nebula is an emission nebula located in the constellation Cygnus. It is the remnant of a supernova that occurred about 5,000 years ago.

Multiple choice

What is the Lagoon Nebula?

  1. An emission nebula

  2. A reflection nebula

  3. A dark nebula

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

The Lagoon Nebula is an emission nebula located in the constellation Sagittarius. It is one of the largest and brightest nebulae in the sky and can be seen with the naked eye.

Multiple choice

What is the Trifid Nebula?

  1. An emission nebula

  2. A reflection nebula

  3. A dark nebula

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

The Trifid Nebula is an emission nebula located in the constellation Sagittarius. It is one of the most beautiful and complex nebulae in the sky and can be seen with a telescope.

Multiple choice

What is the most famous meteor shower?

  1. The Perseid meteor shower

  2. The Leonid meteor shower

  3. The Geminid meteor shower

  4. The Orionid meteor shower
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Perseid meteor shower is the most famous meteor shower. It occurs every year in August and is caused by the Earth passing through a stream of debris left behind by the comet Swift-Tuttle.

Multiple choice

What is the term for a star-shaped sand dune?

  1. Barchan

  2. Seif

  3. Erg

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

A barchan is a star-shaped sand dune.

Multiple choice

What is the most common type of galaxy in the universe?

  1. Elliptical galaxy

  2. Spiral galaxy

  3. Irregular galaxy

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

Spiral galaxies are the most common type of galaxy in the universe, accounting for about 70% of all galaxies.

Multiple choice

What is the shape of an elliptical galaxy?

  1. Round

  2. Oval

  3. Flat

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

Elliptical galaxies are round or oval in shape.

Multiple choice

What is the shape of a spiral galaxy?

  1. Round

  2. Oval

  3. Flat

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

Spiral galaxies are flat, disk-shaped galaxies with a central bulge.

Multiple choice

What is the shape of an irregular galaxy?

  1. Round

  2. Oval

  3. Flat

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

Irregular galaxies have no definite shape.

Multiple choice

What is the central bulge of a spiral galaxy?

  1. A large, round region of stars

  2. A small, round region of stars

  3. A flat, disk-shaped region of stars

  4. An irregular region of stars
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The central bulge of a spiral galaxy is a large, round region of stars.

Multiple choice

What are the spiral arms of a spiral galaxy?

  1. Long, thin regions of stars

  2. Short, thick regions of stars

  3. Flat, disk-shaped regions of stars

  4. Irregular regions of stars
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The spiral arms of a spiral galaxy are long, thin regions of stars.

Multiple choice

What is the Milky Way galaxy?

  1. An elliptical galaxy

  2. A spiral galaxy

  3. An irregular galaxy

  4. A lenticular galaxy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Milky Way galaxy is a spiral galaxy.

Multiple choice

What is the largest galaxy in the universe?

  1. IC 1101

  2. UGC 2885

  3. M87

  4. NGC 4889
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IC 1101 is the largest galaxy in the universe.

Multiple choice

What is the smallest galaxy in the universe?

  1. M33

  2. Andromeda

  3. NGC 205

  4. Segue 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Segue 2 is the smallest galaxy in the universe.

Multiple choice

What is the distance between the Milky Way and Andromeda galaxies?

  1. 2.5 million light-years

  2. 5 million light-years

  3. 7.5 million light-years

  4. 10 million light-years
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The distance between the Milky Way and Andromeda galaxies is 2.5 million light-years.