SOLAR SYSTEM

Detailed explanation-1: -Collision May Have Formed the Moon in Mere Hours, Simulations Reveal. Billions of years ago, a version of our Earth that looks very different than the one we live on today was hit by an object about the size of Mars, called Theia – and out of that collision the Moon was formed.

Detailed explanation-2: -Definition. The giant impact hypothesis is one of the theories for the origin of the Moon. In this theory, a Mars-sized object hit Earth obliquely about 4.5 billion years ago, which ejected a lot of materials to form a disk around Earth. From this disk, a single huge moon was formed.

Detailed explanation-3: -The leading theory of the Moon’s origin is that a Mars-sized body collided with Earth about 4.5 billion years ago. The resulting debris from both Earth and the impactor accumulated to form our natural satellite 239, 000 miles (384, 000 kilometers) away.

Detailed explanation-4: -PROVIDENCE, R.I. [Brown University]-Around 3.8 billion years ago, an asteroid more than 150 miles across, roughly equal to the length of New Jersey, slammed into the Moon and created the Imbrium Basin-the right eye of the fabled Man in the Moon.

Detailed explanation-5: -A NEO that can actually threaten Earth has to be at least 140 meters in diameter, said NASA. And an object that can actually crash and move the Moon out of its orbit and fall towards Earth, according too NASA, will have to be ‘almost as large as the Moon itself’.