Physics ยท General Awareness

Astronomy and Space Science

3,057 Questions

Astronomy and Space Science questions explore observational instruments, spectroscopy, space stations, and astrostatistics. These scientific concepts are vital for SSC, railways, and UPSC preliminary exams. Test your knowledge of space technology and astronomical history with these practice questions.

Spectroscopy techniquesSpace station usesAstronomical instrumentsAstrostatistics basicsExoplanet research programs

Astronomy and Space Science Questions

Multiple choice

Which gamma-ray observatory is known for its ability to study gamma-rays in the sub-MeV energy range?

  1. Compton Gamma-Ray Observatory

  2. Fermi Gamma-ray Space Telescope

  3. Swift Gamma-Ray Burst Mission

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

GLAST is the Gamma-ray Large Area Space Telescope, which was renamed to Fermi Gamma-ray Space Telescope after its launch in 2008. It is known for its ability to study gamma-rays in the sub-MeV energy range, making it a valuable tool for studying the early universe and other high-energy phenomena.

Multiple choice

Which gamma-ray observatory is known for its ability to study gamma-rays in the GeV energy range?

  1. Compton Gamma-Ray Observatory

  2. Fermi Gamma-ray Space Telescope

  3. Swift Gamma-Ray Burst Mission

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

LAT is the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. It is known for its ability to study gamma-rays in the GeV energy range, making it a powerful tool for studying active galactic nuclei, pulsars, and other high-energy phenomena.

Multiple choice

What is the tail of a comet?

  1. A stream of gas and dust that trails behind the comet.

  2. A solid object that trails behind the comet.

  3. A cloud of gas and dust that surrounds the comet.

  4. A ring of gas and dust that surrounds the comet.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The tail of a comet is a stream of gas and dust that trails behind the comet. It is caused by the solar wind, which is a stream of charged particles that blows from the Sun.

Multiple choice

What is the nucleus of a comet?

  1. The solid, icy core of a comet.

  2. The tail of a comet.

  3. The cloud of gas and dust that surrounds a comet.

  4. The ring of gas and dust that surrounds a comet.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The nucleus of a comet is the solid, icy core of a comet. It is made up of frozen gases, such as carbon dioxide, methane, and ammonia, and dust.

Multiple choice

What is the coma of a comet?

  1. The cloud of gas and dust that surrounds the nucleus of a comet.

  2. The tail of a comet.

  3. The solid, icy core of a comet.

  4. The ring of gas and dust that surrounds a comet.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The coma of a comet is the cloud of gas and dust that surrounds the nucleus of a comet. It is caused by the sublimation of the comet's icy surface.

Multiple choice

What is the Stardust mission?

  1. A mission to send a spacecraft to collect samples from a comet.

  2. A mission to send a spacecraft to fly by a comet.

  3. A mission to send a spacecraft to land on a comet.

  4. A mission to send a spacecraft to orbit a comet.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Stardust mission was a mission to send a spacecraft to collect samples from a comet.

Multiple choice

What is the main point of contention in the debate over the definition of an exoplanet?

  1. Whether or not exoplanets should be defined based on their mass or their composition

  2. Whether or not exoplanets should be defined based on their distance from their host star

  3. Whether or not exoplanets should be defined based on their ability to support life

  4. Whether or not exoplanets should be defined based on their size
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The main point of contention in the debate over the definition of an exoplanet is whether or not they should be defined based on their mass or their composition. Some astronomers argue that exoplanets should be defined based on their mass, while others argue that they should be defined based on their composition.

Multiple choice

Which of the following is NOT a method used to detect exoplanets?

  1. The transit method

  2. The radial velocity method

  3. The microlensing method

  4. The direct imaging method
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The direct imaging method is not a method used to detect exoplanets. The other options, however, are all methods used to detect exoplanets.

Multiple choice

Which of the following is NOT a method used to characterize exoplanets?

  1. Measuring the exoplanet's mass

  2. Measuring the exoplanet's radius

  3. Measuring the exoplanet's composition

  4. Measuring the exoplanet's rotation rate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Measuring the exoplanet's rotation rate is not a method used to characterize exoplanets. The other options, however, are all methods used to characterize exoplanets.

Multiple choice

Which of the following is NOT a method used to measure the mass of an exoplanet?

  1. The radial velocity method

  2. The transit method

  3. The microlensing method

  4. The direct imaging method
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The direct imaging method is not a method used to measure the mass of an exoplanet. The other options, however, are all methods used to measure the mass of an exoplanet.

Multiple choice

Which of the following is NOT a method used to measure the radius of an exoplanet?

  1. The transit method

  2. The radial velocity method

  3. The microlensing method

  4. The direct imaging method
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The radial velocity method is not a method used to measure the radius of an exoplanet. The other options, however, are all methods used to measure the radius of an exoplanet.

Multiple choice

Which of the following is NOT a good idea when planning activities for a student trip to a planetarium?

  1. Make sure the planetarium is appropriate for the students' age and maturity level.

  2. Provide students with opportunities to learn about astronomy.

  3. Plan activities that are too long and detailed for the students.

  4. Encourage students to ask questions and interact with the planetarium staff.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When planning activities for a student trip to a planetarium, it is important to make sure the activities are appropriate for the students' age and maturity level and that they are not too long and detailed.

Multiple choice

What is the role of the Space Commission in India?

  1. To advise the Government of India on matters related to space policy and programs

  2. To regulate the activities of private space companies in India

  3. To promote international cooperation in space exploration

  4. To conduct scientific research in the field of astronomy and astrophysics
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Space Commission is an advisory body that provides recommendations to the Government of India on matters related to space policy and programs. It is chaired by the Prime Minister of India and includes members from various government departments and agencies, as well as experts from the field of space science and technology.

Multiple choice

Which type of star is most likely to have a habitable zone?

  1. Red Dwarf

  2. White Dwarf

  3. Neutron Star

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

Red Dwarf stars are smaller and cooler than our Sun, and they have longer lifespans. This makes them more likely to have a habitable zone that is stable for billions of years.

Multiple choice

Which of the following is not a method used to detect exoplanets?

  1. Transit Method

  2. Radial Velocity Method

  3. Microlensing Method

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

Direct imaging is not a method used to detect exoplanets because it is very difficult to directly observe exoplanets due to their small size and distance from Earth.