Do scientists know what time the earliest live in the universe may have formed?

There is not much information concerning life in the entire universe. Only life on Earth is known.

From the evidence, life seems to have appeared on Earth as soon as it was cool enough to support it - over five billion years ago.

You may be correct about second generation stars and your timelines. It would seem entirely plausible for second generation stars to have had habitable planets a couple billion years earlier than ours.

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I've seen estimates on educational TV shows for possible life in the earlier universe, but they may not have been by scientists.

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The only life for which we have evidence is life on Earth. It began roughly 4 billion years ago, and the ludicrous claims of life having began in the year 4004 BC was an idea dreamed up in the 17th century. An Irish bishop called Ussher who added together the supposed ages of the prophets of the Old Testament and came up with that figure. In the 17th century, people had little else to go on anyway, so his suggestion was as good as anyone's. Nowadays we are better informed, and it does nobody any favors to repeat the claims of a 17th century preacher who's views are today disregarded by almost every Christian religion in the world. Regarding life not originating on Earth, we have as yet no evidence for it's existence, so any claims as to how advanced it might be are only speculation at best. If other intelligent life exists elsewhere in the Universe, there is no reason why it should not have sprung up a million years or a billion years before we came along or indeed it may just be getting started. As I said, all this is speculation, and as a scientist, I need evidence before accepting anything as fact.

In order to run a simulation you need facts.

We have no idea at present whether life does actually exist beyond Earth. Based on what we presently *think* we know about the number of planets that exist in the universe and how life gets started, there seems a good chance that there is life beyond earth but we have no idea how common it is likely to be or how easy it is for life to get going.

When you then factor in the evolutionary process all the way to intelligent life, there are simply too many unquantifiable factors to make any simulation realistic. Humans are here because of a whole range of lucky breaks and near-misses with extinction.

In short, all we have to go on is what we understand happened here on Earth - we have no idea how representative Earth is in terms of life in general and intelligent life in particular.

As far as how advanced we may be compared to other intelligent life in the universe then again all we can do is look at Earth's example. It took 4.5 billion years from the formation of the Earth for life to reach a stage that we rather smugly call "intelligent". Our Sun is not a first-generation star but formed from the remnants of an earlier star which exploded long ago. If you want to calculate how potentially old intelligent life could possibly be then you simply need to investigate how long ago the first solar systems formed which included Sun-like stars and Earth-like planets. Not at easy thing to do but the answer is likely to be in the billions of years.

This then raises another question... if intelligent life has possibly existed for billions of years then they must be so advanced that intergalactic travel would be easy for them... so where are they?

In a National Institutes of Health study, the authors hypothesize that if biological complexity increased exponentially during evolution, life in the universe may have begun "10 billion years ago"[8] - more than 5 billion years before the Earth existed.

Actually, one of the oldest civilisations in the universe is the Frondarian race on planet Frondar. They are so highly evolved that they are able to communicate with all forms of life, and despite being half mammal, half plant, they can also change the colour of their skin to blend into their surroundings.

The exact spacial location of this planet within our dimension is extremely difficult to pinpoint, it is best viewed by first jumping into Dimension Four, where it can be seen as Earth's counterpart. There are two possible ways of achieving this. One is to build an extremely expensive spacecraft and journey for billions of light years until crossing the Space-Dimension Chasm. The other is to visit Frondar using the mind (instructions below)

Yes they have an educated idea of when life began here on earth. That will in time be more refined but to say any closer than a few million years is a very long time away and may never be.

Religions will give you a story about such things and never give facts to support thge story.

properly on the intense area in quantum physics in particular coping with string concept there are hypothetically 13 dimentions. As for skill it somewhat can become distinctive varieties. that might assist you tale the human eye can not see organic gentle it needs to mirror off some thing for us to be sure it (think of of it this type we don't see the rays of sunshine in area between the solar and the planets we basically see the gentle as quickly because it bounces off the plannet or whilst its bouncing for the time of the ambience) so which you additionally could make it so the extraterrestrial beings provide a opt for few the abilty to be sure organic unreflected gentle.

As long as people like "created " take birth on earth u wont get answer to your Q.All these brainless creatures have to be wiped out by nature for an intelligent mankind to evolve on earth and find answer to your Q.

We haven't yet found any evidence that intellighent life exists outside our universe. Since we don't know what form extra terrestrial life might take how can we know how long it would be before intelligent life can form. Any computer models will be based on so many unverified assumptions that they become no more useful than wild guesses.

6000 years ago, when God created it.