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

What is the largest structure in the Cosmic Web?

  1. The Great Wall

  2. The Sloan Great Wall

  3. The Hercules-Corona Borealis Great Wall

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

The Great Wall is the largest structure in the Cosmic Web. It is a filament of galaxies that is about 1.5 billion light-years long.

Multiple choice

What is the most common type of galaxy in the Cosmic Web?

  1. Spiral galaxies

  2. Elliptical galaxies

  3. Irregular galaxies

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

Spiral galaxies are the most common type of galaxy in the Cosmic Web. They are characterized by their spiral arms, which are made up of young stars and gas.

Multiple choice

What is the largest structure in the Cosmic Web?

  1. The Great Wall

  2. The Sloan Great Wall

  3. The Hercules-Corona Borealis Great Wall

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

The Great Wall is the largest structure in the Cosmic Web. It is a filament of galaxies that is about 1.5 billion light-years long.

Multiple choice

What is the main component of an astrolabe?

  1. A graduated circle

  2. A pointer

  3. A sighting tube

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

The main component of an astrolabe is a graduated circle, which is used to measure the altitude of celestial bodies.

Multiple choice

What is the composition of the Kuiper Belt objects?

  1. Ice, rock, and organic compounds

  2. Gas and dust

  3. Metal and silicate rocks

  4. Water and carbon dioxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Kuiper Belt objects are composed of a mixture of ice, rock, and organic compounds, such as methane, ethane, and carbon monoxide.

Multiple choice

What is the largest structure in the observable universe?

  1. The Milky Way galaxy

  2. The Local Group

  3. The Virgo Supercluster

  4. The Sloan Great Wall
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Sloan Great Wall is a massive structure of galaxies that is about 1.37 billion light-years long, 840 million light-years wide, and 350 million light-years thick.

Multiple choice

Which astronomical phenomenon is commonly used to measure the distance to distant galaxies?

  1. Parallax

  2. Redshift

  3. Gravitational lensing

  4. Cosmic microwave background radiation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Redshift, the change in the wavelength of light due to the expansion of the universe, is commonly used to measure the distance to distant galaxies.

Multiple choice

What is the name of the astronomical survey that provided the first direct evidence for the existence of dark energy?

  1. High-z Supernova Search Team

  2. Supernova Cosmology Project

  3. Sloan Digital Sky Survey

  4. 2dF Galaxy Redshift Survey
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The High-z Supernova Search Team provided the first direct evidence for the existence of dark energy through observations of distant supernovae.

Multiple choice

Which of the following is NOT a type of galaxy observed by the Hubble Space Telescope (HST)?

  1. Elliptical galaxies

  2. Spiral galaxies

  3. Lenticular galaxies

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

Lenticular galaxies are not observed by the HST.

Multiple choice

What is the name of the largest and most detailed galaxy survey to date?

  1. Sloan Digital Sky Survey (SDSS)

  2. Two Micron All Sky Survey (2MASS)

  3. Galaxy Evolution Explorer (GALEX)

  4. Dark Energy Survey (DES)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The DES is the largest and most detailed galaxy survey to date.

Multiple choice

What is the primary goal of the Dark Energy Survey (DES)?

  1. To measure the expansion rate of the universe

  2. To search for dark matter

  3. To study the evolution of galaxies

  4. To detect gravitational waves
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary goal of the DES is to measure the expansion rate of the universe.

Multiple choice

Which of the following is NOT a type of observation made by galaxy surveys?

  1. Imaging

  2. Spectroscopy

  3. Photometry

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

Astrometry is not a type of observation made by galaxy surveys.

Multiple choice

Which of the following is NOT a type of data product from the Two Micron All Sky Survey (2MASS)?

  1. Images

  2. Catalogs

  3. Spectra

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

The 2MASS does not produce spectra.

Multiple choice

Which of the following is NOT a type of data product from the Hubble Space Telescope (HST)?

  1. Images

  2. Spectra

  3. Photometry

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

The HST does not produce astrometry data.

Multiple choice

What is the name of the instrument used to obtain spectra of galaxies in the Dark Energy Survey (DES)?

  1. DECam

  2. DESI

  3. MUSE

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

The DESI instrument is used to obtain spectra of galaxies in the DES.