State true (T) or false (F).
The outer planets are called gas giants. __

Explanation

To determine whether the statement "The outer planets are called gas giants" is true or false, we can follow these steps:

**Step 1: Identify the outer planets.**
The outer planets in our solar system are Jupiter, Saturn, Uranus, and Neptune.

**Step 2: Understand the characteristics of outer planets.**
These planets are significantly larger than the inner planets (Mercury, Venus, Earth, and Mars) and are primarily composed of gases and liquids.

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