Correct Option
The correct option is The Moon.
Explanation
The Giant Impact Hypothesis, often referred to as the "Big Splat," is the most widely accepted scientific theory explaining the formation of the Earth's natural satellite, the Moon.
Detailed Analysis
According to this hypothesis, the formation of the Moon occurred through the following process:
- The Collision: Approximately 4.4 to 4.5 billion years ago, shortly after the Earth had formed, a Mars-sized protoplanet named Theia collided with the early Earth.
- Debris Formation: The massive impact ejected a significant amount of material from both the impactor and the Earth's outer layers (crust and mantle) into orbit around the Earth.
- Accretion: Over time, gravity caused this orbiting debris to coalesce and accrete, eventually forming the Moon.
This hypothesis successfully explains several key characteristics of the Moon, such as its relatively small iron core, lower density compared to Earth, and the identical oxygen isotope composition shared between lunar rocks and Earth's mantle.
Key Takeaway: The Giant Impact Hypothesis posits that the Moon originated from the debris resulting from a collision between the early Earth and a Mars-sized body known as Theia.