Classify the following sentence as either a declarative sentence or an interrogative sentence.

How many stars are in the Milky Way?
The given sentence is an interrogative sentence.
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify the following sentence as either a declarative sentence or an interrogative sentence.

How many stars are in the Milky Way?

### Output:
The given sentence is an interrogative sentence.