Physics · 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 physics the universe types of galaxies galaxies constellations

The spiral and disc shaped galaxy in which, our solar system is located is named -

  1. Milky way galaxy

  2. Andromeda galaxy

  3. Cartwheel galaxy

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

Our solar system is a part of the Milky way galaxy which is one of the numerous galaxies in the universe. Its name "milky" is derived from its appearance as a dim glowing band arching across the night sky in which the naked eye cannot distinguish individual stars.

Multiple choice physics the universe types of galaxies galaxies constellations

Fill in the blank:

The billions of stars which occur in the form of groups or clusters are commonly called _______ .

  1. galaxies

  2. nebula

  3. plutons

  4. <span class="st">stellar
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction is galaxy.
The galaxy of which the solar system is a part; the Milky Way.
Multiple choice

Why do variable stars pulsate in brightness?

  1. Gain in mass

  2. Expansion & contraction of the outer layers

  3. Constant contraction

  4. Movement at a fixed rate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Variable stars, such as Cepheid variables, pulsate because of the periodic expansion and contraction of their outer layers, which is driven by changes in opacity and temperature.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

All images from Hubble are ___________________,in which its cameras incorporate a variety of filters each sensitive to specific wavelengths of light.

  1. advanced diffracted

  2. monochromatic grayscale

  3. Lucky Cam

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

All images from Hubble are monochromatic gray scale, in which its cameras incorporate a variety of filters each sensitive to specific wavelengths of light.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

The GHRS was a spectrograph designed to operate in the ___________.

  1. infrared

  2. ultraviolet

  3. visible

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The GHRS was a spectrograph designed to operate in ultraviolet light. It was installed on the Hubble Space Telescope during its original constructing and it was launched into space as a part of the space telescope abroad the space shuttle on April 24,1990.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

Hubble's four main instruments observe in the near

  1. ultraviolet range

  2. infrared range.

  3. red wavelength range

  4. yellow wavelength range
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

The instruments of hubble that analyses light from the universe such as cameras, spectrographs and inter ferometers helps in observing the near UV (ultraviolet range) to IR (infrared range).

Multiple choice geography night sky types of galaxies galaxies constellations

A group of stars that appear to form a pattern in the sky is known as a _____. 

  1. $Constellation$
  2. $Saptrishi$
  3. $Planet$
  4. $Satellite$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A constellation is a group of stars that appear to form a recognizable pattern or shape in the night sky as viewed from Earth.

Multiple choice physics sky vision types of galaxies galaxies constellations

The nearest galaxy to the Milky Way is _________.

  1. Fornax galaxy

  2. Samprero galaxy

  3. Andromeda galaxy

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

The Andromeda Galaxy is the nearest major spiral galaxy to our own Milky Way galaxy.

Multiple choice physics sky vision types of galaxies galaxies constellations

The stars in space are _________________.

  1. uniformly spread out.

  2. distributed completely at random

  3. mostly contained within widely separated galaxies

  4. chiefly in the Milky Way
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Stars are not scattered randomly through space they are gathered together into vast groups also known as galaxies.

Answer is $C$

Multiple choice physics sky vision types of galaxies galaxies constellations

The Milky Way is ________________.

  1. a gas cloud in the solar system

  2. a gas cloud in the galaxy of which the sun is a member

  3. the galaxy of which the sun is a member

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

Milky way is the galaxy which contains as our solar system hence it also contains sun.

Answer is $C$

Multiple choice physics sky vision types of galaxies galaxies constellations

Milky Way galaxy is in cluster of galaxies which is also known as:

  1. local group

  2. big bang group

  3. temperate group

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The milk way galaxy cluster is also known as the local supercluster as local group.


Multiple choice physics sky vision types of galaxies galaxies constellations

The visible light spectrum of a typical star like our Sun shows:

  1. bright emission lines

  2. shows all of the other answers depending on the season on Earth

  3. no spectral lines at all

  4. dark absorption lines
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

They show dark absorption light which tells us about the temperature of star like oxide lines are there only in cool stars while hot stars show helium lines.