Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Consider the following in context of galaxies:

1. Galaxies are gravitationally bound systems.
2. Milky Way is a Spiral Galaxy.
3. Generally, elliptical galaxies are younger than the spiral galaxies.

Select the correct statements:

• A. 1, 2 and 3
• B. 1 and 2 only
• C. 2 and 3 only
• D. 1 and 3 only

Answer 1

The correct option is B 1 and 2 only

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust and dark matter. There are three general types: elliptical, spiral, and irregular.
Spiral galaxies are thought to evolve into elliptical galaxies as the spirals get older. Milky way is a spiral galaxy.