Question

which statement is true about the galaxy?
this type of galaxy contains little to no gas.
this type of galaxy has a high percentage of young stars.
this type of galaxy contains earth and the solar system.
this type of galaxy is thicker near the center than near the outer edge.

Explanation:

To determine the true statement about galaxies:

1. Statement 1: Elliptical galaxies typically have little to no gas (as they have low star - formation activity now). This is a known characteristic of elliptical galaxies.
2. Statement 2: Galaxies with a high percentage of young stars are usually spiral or irregular galaxies (due to ongoing star formation from gas), not the type with little gas. So this is incorrect.
3. Statement 3: The solar system is in the Milky Way galaxy, but not all galaxies contain the Earth - solar system. This is incorrect.
4. Statement 4: Spiral galaxies have a thinner disk near the center (the bulge is more concentrated) and a flatter disk overall, while elliptical galaxies are more spheroidal. The description here doesn't match typical galaxy structures. So this is incorrect.

Answer:

The statement "This type of galaxy contains little to no gas." (the first statement in the list of galaxy - related statements)