This is a fun question! Here's how to think about it:

1. Earth's Circumference

* The Earth's circumference is roughly 40,075 kilometers (24,901 miles).

2. Moon's Diameter

* The Moon's diameter is about 3,474 kilometers (2,159 miles).

3. Calculation

* Divide Earth's circumference by the Moon's diameter: 40,075 km / 3,474 km ≈ 11.5

Answer

You would need approximately 11.5 moons placed side-by-side to span the distance from one point on the horizon to the opposite point on the horizon.

Important Note: This is a simplified calculation. In reality, the Moon's apparent size changes slightly depending on its distance from Earth. Also, the Earth is not perfectly spherical.