which came first earth or moon ?

Answer 1

Recently, the giant impact hypothesis has been considered a more viable scientific hypothesis for the moon's origin than the coformation or condensation hypothesis. The Giant Impact hypothesis holds that the Moon formed from the ejecta resulting from a collision between a very early, semi-molten Earth and a planet-like object the size of Mars, which has been referred to as Theia or Orpheus. The material ejected from this impact would have gathered in orbit around Earth and formed the Moon. This hypothesis is bolstered by two main observations: First, the composition of the Moon resembles that of Earth's crust, whereas it has relatively few heavy elements that would have been present if it formed by itself out of the same material from which Earth formed. Second, through radiometric dating, it has been determined that the Moon's crust formed between 20 and 30 million years after that of Earth, despite its smallness and associated larger loss of internal heat, although it has been suggested that this hypothesis does not adequately address the abundance of volatile elements in the moon.[6]

Answer 2

The Earth. It came first as all the planets were first formed. The moon came some time after as a huge asteroid hit the earth in its youth when all of Earth was nothing more than fiery molten lava. The impact of this huge asteroid was able to hit the earth at such a high velocity that it knocked a huge chunk of the earth into space, and due to the gravitational pull of the Earth on this new satellite, this ball of rock began to encircle the Earth. Thus forming the moon, and both objects cooled down and hardened. Except, Earth had a much thicker atmosphere, and it began to rain.....setting in motion the chain of events for life and you asking this question and me attempting to answer it.

Answer 3

I have heard that the moon was a left-over from a collision with the earth by another celestial body. So, I suppose that if that is true then the earth came first.

Answer 4

The earth. The two theories are that the moon was formed when an object struck the earth, knocking what became today's moon from it. (more evidence exists to support this)
The second, is that the primordial "dust" which became the planets, also applied to the body which became the moon.

Answer 5

Moon

Answer 6

its a theory the moon is a part of the earth that came off so you could say earth or the same time

Answer 7

The Earth. Recent thinking is that the moon is actually a piece of the Earth that was ejected when a meteor or comet struck the Earth. In fact this is a really old theory -- I remember hearing it when I was a kid -- that has gained new credibility.

Answer 8

Earth was there first. Then a smaller Mars sized planet collided into the Earth. The remnants of that collision coalesced to become the moon.

Answer 9

Theoretically, the Earth came first, and while it was still a big ball of molten rock and lava, the "moon" broke off, but it was still also a ball of molten rock and lava. The moon broke off from the Earth so that the Earth would be more stable.

Answer 10

Earth, the moon was created after.