Question

What is the shape of the galaxy to which our Sun and hence the solar system belongs?

• A. Elliptical
• B. Spiral
• C. Irregular
• D. None of the above

Answer 1

The correct option is B Spiral

Our own galaxy, the Milky Way, is a large disk-shaped barred-spiral galaxy about 30 kiloparsecs in diameter and a kiloparsec thick. It contains about two hundred billion ($2\times {10}^{11}$) stars and has a total mass of about six hundred billion ($6\times {10}^{11}$) times the mass of the Sun.