The correct answer is D. All of the above.
The moon is the only natural satellite of Earth. It is the fifth largest moon in the Solar System and the largest among planetary satellites relative to the size of the planet that it orbits (its primary). The Moon is thought to have formed about 4.51 billion years ago, not long after Earth. The most widely accepted explanation is that the Moon formed from the debris left over after a giant impact between Earth and a Mars-sized body called Theia.
The Moon has no liquid water or atmosphere. The surface of the Moon is covered in craters, which were formed by impacts from asteroids and comets. The Moon has no magnetic field, so it is exposed to the solar wind, which is a stream of charged particles from the Sun. The Moon’s surface is also very dry, with no evidence of liquid water.
The Moon’s gravity is about one-sixth of Earth’s gravity. This means that if you weigh 100 pounds on Earth, you would weigh about 16 pounds on the Moon. The Moon’s lower gravity makes it easier to jump higher and walk further.
The Moon’s rotation is tidally locked to Earth, which means that the same side of the Moon always faces Earth. This is because the Moon’s gravity has slowed down its rotation over time. The Moon’s rotation period is the same as its orbital period, which is 27.3 days.
The Moon has a significant effect on Earth. The Moon’s gravity helps to stabilize Earth’s orbit and tilt. The Moon also causes the tides on Earth. The tides are the rise and fall of the sea level caused by the Moon’s gravity.
The Moon is a fascinating and important part of our solar system. It is a beautiful object to look at and it has a significant effect on Earth.