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Some people say that the Big Bang began it. This, however, is just a theory. To this day, scientists, still do not know how humanity and life on our planet came to be.
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The Big Bang Theory models the Universe as a whole, and so far at least is the nearest theory to fit observations and calculations; but it leaves the uncomfortable "What came before?" question.. The Solar System is much younger.
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The two nouns in the second sentence ought be the other way round - Life in general came first, almost certainly as single-celled organisms first, but you are right that the actual mechanism has not been determined. We hominids appeared within the last 3 or 4 million years, very recently in geological terms, with our own species probably less than 1 million. It's hard to know because land animals from the time did not leave many fossils, compared to the rich assemblages of marine fossils.
Wiki User
∙ 6y ago
Wiki User
∙ 10y agoThe planet Earth is old of approx. 4 500 000 years.
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How many species of plants exist on earth?
1.4 millon plants exist on earth
How many species of plants exist earth?
1.4 million plants exist on earth
How does the earth still spin when gravity ceases to exist?
The earth doesn't spin because of gravity, and gravity has not ceased to exist.
How long do water exist on earth?
Water will exist on earth forever because the water cycle gives a continuous supply of water.
On earth oxygen usually exist as what?
a gas
Is there a country starting with X?
their are no country's that exist on earth that start with X. but theres the legendary land of Xanadu...
Does the wampire exist on Earth?
Vampires exist only in stories, films, and folklore.
How many species of plants exist on earth?
1.4 millon plants exist on earth
What caused te Earth's atmosphere to exist?
What caused the Earth's atmosphere to exist?
How many species of plants exist earth?
1.4 million plants exist on earth
Where do you exist?
Earth!
What would it be like if space didnt exist?
We wouldn't know because if space didn't exist earth wouldn't exist and if earth didn't exist we wouldn't exist! So there you go there is your answer.
What happens if earth doesn't exist?
then we dont exist
Where will you start living if the earth will not exist in the future?
It won't be in my lifetime, but in a space station, mars, and if it after the Sun turns into a red giant then Europa.
Do vampire exist on earth?
No, vampires are fictional. They do not exist in real life - there is no one on earth who "has no reflection in a mirror".
Does most life on earth exist within a few meters of the earth?
Yes most life does exist within a few meters of the earth.
What would happen to earth if the greenhouse effect did not exist?
The earth would become very cold, and cease to exist.
