# Naked Science Forum

## On the Lighter Side => New Theories => Topic started by: atbsphotography on 27/10/2017 10:37:36

Title: Is the answer to the lack of contact from Alien life time + distance?
Post by: atbsphotography on 27/10/2017 10:37:36
So the search for extraterrestrial life has been going on for quite a while, and thus far we have no explanation for why we have no contact from them or whether they truly exist. But what if the answer to this is time + distance?
For example, the sun is 150 million km away from us or thereabouts and takes roughly 8 minutes 20 seconds for the light from the sun to reach us. And if the sun suddenly went dark it would be 8 minutes 20 seconds before we saw it, therefore we know we only see the changes after a brief amount of time over immense distances.

Theoretically, imagine a planet orbiting a star a billion light years away, the star only originated at that point in space 2 billion years ago, we would now see the light from that star as it was a billion years ago at a billion years old. The planet itself only formed 500 million years after the star first formed. Therefore we would now see both the star and the planet, the star being a billion years old and the planet a mere 500 million years old.

Now the planet is 500 million years old as we see it now but in real terms, it is now 1.5 billion years old and the star 2 billion years old. Remember we see it from a billion years ago, so if life originated on that planet a billion years after the planet formed it would be only 500 million years old at that point in time. But because of our distance from the star an planet we only see the planet as it was at 500 million years old, long before the life originated on it. It would take another billion years for us to see the planet at that point in time when the life first originated. And thus we would have found extraterrestrial life on another planet even if it was such a primitive form of life.

The wait would have been a long one mind but when dealing with distances in excess of 9.460730473e+21 km the light would need to have travelled for that billion years to get to us.
Title: Re: Is the answer to the lack of contact from Alien life time + distance?
Post by: guest39538 on 27/10/2017 10:41:47
So the search for extraterrestrial life has been going on for quite a while, and thus far we have no explanation for why we have no contact from them or whether they truly exist. But what if the answer to this is time + distance?
For example, the sun is 150 million km away from us or thereabouts and takes roughly 8 minutes 20 seconds for the light from the sun to reach us. And if the sun suddenly went dark it would be 8 minutes 20 seconds before we saw it, therefore we know we only see the changes after a brief amount of time over immense distances.

Theoretically, imagine a planet orbiting a star a billion light years away, the star only originated at that point in space 2 billion years ago, we would now see the light from that star as it was a billion years ago at a billion years old. The planet itself only formed 500 million years after the star first formed. Therefore we would now see both the star and the planet, the star being a billion years old and the planet a mere 500 million years old.

Now the planet is 500 million years old as we see it now but in real terms, it is now 1.5 billion years old and the star 2 billion years old. Remember we see it from a billion years ago, so if life originated on that planet a billion years after the planet formed it would be only 500 million years old at that point in time. But because of our distance from the star an planet we only see the planet as it was at 500 million years old, long before the life originated on it. It would take another billion years for us to see the planet at that point in time when the life first originated. And thus we would have found extraterrestrial life on another planet even if it was such a primitive form of life.

The wait would have been a long one mind but when dealing with distances in excess of 9.460730473e+21 km the light would need to have travelled for that billion years to get to us.

Ok I get your notion but no, as the Sun does not occupy a different dimension of time than the earth.  What the Sun does is be observed by us but we are not observing it int he correct position (apparently).
The entire Universe is in the present always, but great thinking by yourself, you have a good mind.
Title: Re: Is the answer to the lack of contact from Alien life time + distance?
Post by: evan_au on 27/10/2017 12:04:54
The physicist Enrico Fermi asked the same question.

This has provoked a lot of discussion on the subject.

Title: Re: Is the answer to the lack of contact from Alien life time + distance?
Post by: guest39538 on 27/10/2017 14:25:40
The physicist Enrico Fermi asked the same question.

This has provoked a lot of discussion on the subject.

0=1

where P=1 but the evidence = 0

Reminds me of my own notions :D

With all the stuff out there I suppose there must be alien life even if in the form of a plant or ''pond life'' .   Alien just simply means not local to this Earth.

Title: Re: Is the answer to the lack of contact from Alien life time + distance?
Post by: atbsphotography on 28/10/2017 08:04:06
Quote
The entire Universe is in the present always
The universe in its current state exists at a single point in time, therefore time is still current across the universe, so in theory time and distance are still the most probable explanation to our understanding of extraterrestrial life. That being said my first analogy was slightly off, the distance and view are quintessentially the same but the time aspect was off due to the fact everything in the universe exists at a single point in time. The immense distance associated with a billion light years would provide our first view of primordial microbial life if we used atmospheric date and confirmed life exists at that point. Due to the distance between us and the planet we can analyze the molecular makeup of the planet at that point in time. Though my first explanation for the distance and time light has taken to reach us is also wrong.

Quote
Theoretically, imagine a planet orbiting a star a billion light years away, the star only originated at that point in space 2 billion years ago, we would now see the light from that star as it was a billion years ago at a billion years old. The planet itself only formed 500 million years after the star first formed. Therefore we would now see both the star and the planet, the star being a billion years old and the planet a mere 500 million years old.

I shall amend it as follows;
The hypothetical star formed 3.5 billion years ago at a distance of a billion lightyears away, the planet formed 500 million years after the star, the first photons of light emitted by the star would be seen a billion years after it was emitted, so from our viewpoint we see the light first emitted by the star, in the immediate time after birth. Then 500 million years after we detect the first light emitted by the star we now would be able to see the light reflected from the planet. Making the star 2 billion years old and the planet 1.5 billion years old.  The first microbial life emerged on the planet a billion years after it was formed but because it took 1.5 billion years for us to see the light reflected from the planet in the first place both the star and the planet continue to age due to the nature of time. Therefore it would take another billion years for us to detect the first hints of life on the planet. Which in theory would lead us to believe that it took 3.5 billion years to detect the first hint of life, the star and planet now being 3.5 billion years old and the planet 3 billion years old.
Title: Re: Is the answer to the lack of contact from Alien life time + distance?
Post by: evan_au on 28/10/2017 22:17:23