Does life here on Earth indicate life elsewhere?

[WaveJumper]

How did life reach the Earth? What form was it in? Where did it originate? How long was it in transit? What was the mortality rate during transit? etc, etc. Until some of these questions can be addressed with plausible numbers, panspermia is no better an option than in situ abiogenesis.

http://videos.howstuffworks.com/tlc/28848-it-came-from-outer-space-bacteria-in-space-video.htm


I am not saying abiogenesis is impossible, i am saying that IMO the blueprint of life(the encoded information in the mutating RNA/DNA that makes life possible) is of alien origin. Our planet Earth is very young - less than 5 billion years old, so if abiogenesis were possible, life elsewhere in the universe would be at least a couple of billion years older than the early Earth. That's assuming there is some form of life elsewhere in the universe. As Baywax said, some forms of life have the ability to live dormant for millions of years in the Arctic ice and become active when brought to warmer temperatures. See the above video link.

 

[Ophiolite]

There's nothing saying the Miller experiment doesn't describe the abiogenesis of life on another planet, then having it populate this one.

Nothing, except for the inconvenient fact that the Miller/Urey experiment said nothing relevant about abiogenesis. All it produced was a few organic molecules, including some amino acids. There is a richer range of these already available in interstellar space.

Some forms of life are said to have the ability to got dormant in space then flourish upon coming into contact with a habitable planet... primitive or not.

Which is the second half of the reason I lean to panspermia to account for life on Earth.

Our planet Earth is very young - less than 5 billion years old, so if abiogenesis were possible, life elsewhere in the universe would be at least a couple of billion years older than the early Earth.

Not necessarily. Population II stars lacked the metallicity to produce terrestrial planets. It required multiple phases of stellar processing to put the required material into the interstellar medium. We may just be the first. Someone has to be.

 

[Bob_X]

Maybe ...
If time goes to infinite, the probability =1. since life is just a form of some material things.

 

[DaveC426913]

Maybe ...
If time goes to infinite, the probability =1. since life is just a form of some material things.

Unless you account for the heat death / big freeze, in which case, probability does not reach 1.

 

[Bob_X]

Unless you account for the heat death / big freeze, in which case, probability does not reach 1.

Now the question goes to "what is time?".

Can the big freeze happens while time is going on?

Maybe heat death means the universe collapes to nothing and time fades away.

 

[DaveC426913]

Now the question goes to "what is time?".

Can the big freeze happens while time is going on?

Maybe heat death means the universe collapes to nothing and time fades away.

These are not terms I made up.

They both mean that, eventually, the universe will stabilize at a homogenous temperature, no hotspots, no cold spots, no transfer. All reactions thst can occur will have occurred, and no more reactions will support life.

Time will continue, but there will be nothing for life to arise from.