There are _______ planets in our solar system.

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks how many planets are in our solar system.

2. **Recall the Information**: From our knowledge of astronomy, we know that the solar system consists of several celestial bodies, including planets.

3. **List the Planets**: The eight recognized planets in our solar system are:
- Mercury
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