What is the maximum value of gravitational potential energy and where?

Explanation

To determine the maximum value of gravitational potential energy and where it occurs, we can follow these steps:

### Step 1: Understand Gravitational Potential Energy
Gravitational potential energy (U) between two masses (m1 and m2) separated by a distance (r) is given by the formula:
\[ U = -\frac{G m_1 m_2}{r} \]
where \( G \) is the gravitational constant.

### Step 2: Analyze the Formula
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