The Moon
The Moon is not a primordial object; it is an evolved terrestrial planet with internal zoning similar to that of Earth.
For the first time in human history, two human beings stood on the surface of another
However, the most profoundly significant tangible objects we got from the moon landing and the Apollo program may well have been those photos that show what the Earth looks like from the lunar surface.
The most profound object we got from the Apollo program was the photos of how the Earth looks from the lunar surface.
“There was this incredible leap in awareness that we got from looking homeward from all that distance and seeing the Earth as a precious and tiny oasis of life in the vastness of space,” Chaikin says.
“That is a very profound shift in perspective that Apollo gave us that we still need to absorb. We are still trying to get with the fact that the Earth is a world to be cherished and protected.”
Exploration of the Moon taught us that Earth probably formed in a catastrophic impact with another planet half its size about 4.5 billion years ago. That collision threw a cloud of debris into orbit around Earth that eventually accreted to form the Moon. From that moment, the environment of Earth began to evolve into the life-sustaining planet we now enjoy.
Apollo explorations taught us that the Earth probably formed about billion years ago during a catastrophic impact with another planet half its size. The collision threw a cloud of debris into the earth’s orbit that formed the moon. From that moment, the Earth’s environment began to evolve into the life-sustaining planet that it is today.
Exploration of the Moon and, in particular, analyses of lunar rocks taught us that the Earth-Moon system continued to be bombarded by asteroids and comets. There may have been a particularly intense period of bombardment ~3.9 to 4.0 billion years ago that is nearly coincident with the earliest evidence of life on Earth. That coincidence has caused geologists to wonder if this bombardment may be implicated in the origin and early evolution of life on Earth.
During the Apollo missions analysis of lunar rocks taught us that 3.9 to 4 billion years ago, the Earth and its moon was bombarded by asteroids and comets. During this period of intense bombardment, geologists believe that the first origins of life on Earth appeared.
The impact bombardment that preceded that earliest evidence of life resurfaced Earth, so it looked like the heavily cratered surfaces of the Moon, Mars, and Mercury. It destroyed a lot of the rocks on the surface, so we are left with only a few mineral zrcon relicts that are older than 3.9 billion