The possibility of life on other planets.. Aliens...

Yukon Cornelius · 03-21-2009, 04:44 PM

Quote:

Originally Posted by Schredds

I dont buy into it one bit, Im not saying planets earth is the only place where there is life. I do however think it is the only place that has life that can think for itself and communucate and do/perform all the tasks that we human beings can do. I belive there are oranisms (a living thing that has or can develop the ability to act or funtion independantly)on other planets ie:bacteria, which looks alot like what is going on in that video of the NASA footage. Whos to say that all these sightings and things we all have seen on TV and movies and the news isnt just a hoax, Im mean really, with the technology we have nowadays we can create something out of nothing and get many people to believe it. UFOs actually do exist they are unidentified flying object, so, anything you see flying and dont know what it is ,is a UFO, but as far as Im concerned alien spacecrafts do not exist at all, nor do 'aliens' from outter space .

Bacteria needs oxygen to live... that was in space.

Guybrush · 03-21-2009, 04:58 PM

Quote:

Originally Posted by Yukon Cornelius

Bacteria needs oxygen to live... that was in space.

.. are you sure about this?

Yukon Cornelius · 03-21-2009, 06:46 PM

Quote:

Originally Posted by toretorden

.. are you sure about this?

After a fast google no im not...

dac · 03-21-2009, 07:00 PM

The thought that all life must be oxygen dependent is a bit naive. Organisms on earth evolved to use oxygen because there was a large amount of it and it was useful. Organisms of different home worlds would surely evolve to take advantage of whatever useful elements are present.

khfreek · 03-21-2009, 07:04 PM

Quote:

Originally Posted by dac

The thought that all life must be oxygen dependent is a bit naive. Organisms on earth evolved to use oxygen because there was a large amount of it and it was useful. Organisms of different home worlds would surely evolve to take advantage of whatever useful elements are present.

There are organisms on the earth that don't use oxygen, even.

Anaerobic organism - Wikipedia, the free encyclopedia

Yukon Cornelius · 03-21-2009, 07:57 PM

Quote:

Originally Posted by khfreek

There are organisms on the earth that don't use oxygen, even.

Anaerobic organism - Wikipedia, the free encyclopedia

After studying this i agree, but nothing with much intelligence.

Guybrush · 03-21-2009, 07:59 PM

There are lots of anaerobic microorganisms .. It's generally believed that in the first half of earth's history, there wasn't much oxygen around and so early life was not oxygen dependent. Then there's a hypothesis that cyanobacteria, bacterias that are capable of (oxygenic) photosynthesis are "responsible" for first adding over time large amounts of oxygen to our atmosphere as it is a byproduct of photosynthesis.

edit :

As for that thing being a bacteria. Well, aside from other logical problems, bacterias are unicellular and generally very small. Much smaller than eukaryotic ("animal") cells. I guess that one would be a bit big for a cell

Yukon Cornelius · 03-23-2009, 07:09 AM

Did anyone see the video of that guy in colorado with the alien at his window... ha ha ha

Yukon Cornelius · 03-23-2009, 10:19 AM

Another interesting topic would be to plant trees (in a controlled enviroment) on mars and have it let off greenhouse gasses to in turn warm the atmosphere and support life as we know it.

sleepy jack · 03-23-2009, 12:59 PM

It's an interesting idea Bradbury (and would make a great science fiction novel, oh wait) but not a realistic one. Trees need oxygen, nutrients and water in order to grow even if you gave them a controlled environment and had them growing in some sort of giant bubble once you took that away they'd just die (ignoring what they need to survive) because there's no protection from cosmic radiation or ultraviolet light like there is on Earth.

03-21-2009, 07:00 PM	#34 (permalink)
dac MB's Biggest Fanboy Join Date: May 2008 Location: Cloud Cuckoo Land Posts: 2,852	The thought that all life must be oxygen dependent is a bit naive. Organisms on earth evolved to use oxygen because there was a large amount of it and it was useful. Organisms of different home worlds would surely evolve to take advantage of whatever useful elements are present. __________________

03-21-2009, 07:59 PM	#37 (permalink)
Guybrush Juicious Maximus III Join Date: Nov 2008 Location: Scabb Island Posts: 6,525	There are lots of anaerobic microorganisms .. It's generally believed that in the first half of earth's history, there wasn't much oxygen around and so early life was not oxygen dependent. Then there's a hypothesis that cyanobacteria, bacterias that are capable of (oxygenic) photosynthesis are "responsible" for first adding over time large amounts of oxygen to our atmosphere as it is a byproduct of photosynthesis. edit : As for that thing being a bacteria. Well, aside from other logical problems, bacterias are unicellular and generally very small. Much smaller than eukaryotic ("animal") cells. I guess that one would be a bit big for a cell __________________ Something Completely Different

03-23-2009, 07:09 AM	#38 (permalink)
Yukon Cornelius Music Addict Join Date: Jan 2009 Location: Texas Posts: 625	Did anyone see the video of that guy in colorado with the alien at his window... ha ha ha __________________ Attempting to find a cure for Stupid...

03-23-2009, 10:19 AM	#39 (permalink)
Yukon Cornelius Music Addict Join Date: Jan 2009 Location: Texas Posts: 625	Another interesting topic would be to plant trees (in a controlled enviroment) on mars and have it let off greenhouse gasses to in turn warm the atmosphere and support life as we know it. __________________ Attempting to find a cure for Stupid...