Question

Which of the following statements is correct about the galaxy Milky Way?

• A. Less than $10\%$ of the mass of the Milky Way is visible
• B. Spitzer Space Telescope is an infrared telescope used in mapping and studying the Milky Way galaxy
• C. Milky Way is a part of the Virgo supercluster, a group of galaxies within $150$ million light years
• D. All of these

Answer 1

The correct option is D All of these

• A galaxy is a collection of stars and interstellar material held together by gravity. The galaxy our Sun lives in is called the Milky Way.
• The name `Milky Way' comes from the band of light that is seen overhead on very dark nights.
• A thick layer of interstellar dust hides much of the Galaxy from observation by optical telescopes, and astronomers can determine its large-scale structure only with the aid of radio and infrared telescopes, which can detect the forms of radiation that penetrate the hidden matter.