14
   

Are we alone in the universe?

 
 
Artimas
 
  1  
Reply Tue 23 Sep, 2014 10:38 pm
@rosborne979,
We are not as technological and advanced as we should be, no wonder we don't see or find any other intelligence, our species, is not exactly that advanced/intelligent right now. Takes intelligence, to find intelligence.
rosborne979
 
  1  
Reply Wed 24 Sep, 2014 02:02 pm
@Artimas,
Artimas wrote:
We are not as technological and advanced as we should be, no wonder we don't see or find any other intelligence, our species, is not exactly that advanced/intelligent right now.

You don't know that we are not as technologically advanced as we should be. We have nothing to measure ourselves against. The same can be said about our intelligence, we have nothing (extraterrestrial) to measure ourselves against. We are the most technologically intelligent species on Earth right now however.
farmerman
 
  1  
Reply Wed 24 Sep, 2014 02:09 pm
@rosborne979,
actually, the earth and the moon aren't different sizes. They are just farther away.
rosborne979
 
  1  
Reply Wed 24 Sep, 2014 08:34 pm
@farmerman,
farmerman wrote:
actually, the earth and the moon aren't different sizes. They are just farther away.

Huh? I don't get it.
0 Replies
 
Setanta
 
  2  
Reply Thu 25 Sep, 2014 03:13 am
That was just bucolic humor.

Sound track time . . .

rosborne979
 
  1  
Reply Thu 25 Sep, 2014 04:13 am
@Setanta,
Now I have to look up bucolic. This is not my day.
farmerman
 
  1  
Reply Thu 25 Sep, 2014 04:40 am
@rosborne979,
Its a large leafy green vegetable of the cabbage family
Setanta
 
  1  
Reply Thu 25 Sep, 2014 04:49 am
@farmerman,
I wouldn't use it to make sauerkraut, though.
0 Replies
 
carloslebaron
 
  1  
Reply Tue 14 Oct, 2014 08:55 am
No, we are not alone in the universe, we have the moon, the stars....







Lordyaswas
 
  1  
Reply Tue 14 Oct, 2014 09:30 am
@carloslebaron,
.......the Klingons, The Vulcans, The Ferengi.....
0 Replies
 
Rickoshay75
 
  1  
Reply Thu 16 Oct, 2014 03:36 pm
@Jpsy,
Jpsy wrote:

Neil DeGrasse Tyson- We're not special- YouTube (if the link disappears just search the title on YT)
http://www.youtube.com/watch?v=rpr8YA-rOpA

Almost 99% of the mass of the human body is made up of the six elements oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.

The most abundant element in the human body is oxygen, making up about 65% of the weight of each person. Carbon is the second more abundant element, making up 18% of the body. Although you have more hydrogen atoms than any other type of element, the mass of a hydrogen atom is so much less than that of the other elements that its abundance comes in third, at 10% by mass.

The 10 most abundant elements in the Universe are hydrogen, helium, oxygen, neon, nitrogen, carbon, silicon, magnesium, iron and sulfur.

So 4 of the 6 most abundant elements in the universe are the most abundant elements in the human body. We live in a galaxy which contains 100 billion stars. There is an estimated 100 billion galaxies in our universe, each with billions of stars. Some galaxies have trillions of stars. Many of those stars have planets orbiting them. The most abundant elements in our universe, and in our bodies, may be in the crusts and oceans of some of those planets.

Do you still think we are alone in the Universe?


In Sagan's Cosmos he covered that question in depth. He characterized the existence of earth life as being the last inch of a football field
0 Replies
 
Rickoshay75
 
  1  
Reply Thu 16 Oct, 2014 03:42 pm
@Setanta,
Setanta wrote:

Jpsy wrote:
Do you still think we are alone in the Universe?


Why do you assume that your potential interlocutors believe this?

You miss at least a couple of signal points here. If you are sitting in your house, and i am sitting in my house, and we are miles apart, then it is reasonable to say that you and i are alone. Now, if we had a telephone or a radio, we could speak, and to that extent, we would no longer be alone. However, it the time it took for one of us to speak and that message to be received at the other end exceeded our life expectancy, then we would be, functionally, alone once more. If someone lives on a star sixty light years from our planet and i send out a message, even it received and replied to, the likelihood is that i won't be alive when the reply comes in. Were humans ever established on Mars, if you got on the radio and said "Hello," you'd have to wait 40 minutes to get a response. Conversation would be difficult at best. Over intra-galactic distances it would be impossible. You could send a message out into the void, but it would be silly to expect to converse. So, yes, we are alone.

A better question would be, are we unique. That might be worth discussion, in the sense of are we the only sentient, self-aware, technological civilization.


First we would need to answer the question - are we alone here on earth?
0 Replies
 
Rickoshay75
 
  1  
Reply Sun 28 Dec, 2014 02:26 pm
@Jpsy,
Jpsy wrote:

Neil DeGrasse Tyson- We're not special- YouTube (if the link disappears just search the title on YT)
http://www.youtube.com/watch?v=rpr8YA-rOpA

Almost 99% of the mass of the human body is made up of the six elements oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.

The most abundant element in the human body is oxygen, making up about 65% of the weight of each person. Carbon is the second more abundant element, making up 18% of the body. Although you have more hydrogen atoms than any other type of element, the mass of a hydrogen atom is so much less than that of the other elements that its abundance comes in third, at 10% by mass.

The 10 most abundant elements in the Universe are hydrogen, helium, oxygen, neon, nitrogen, carbon, silicon, magnesium, iron and sulfur.

So 4 of the 6 most abundant elements in the universe are the most abundant elements in the human body. We live in a galaxy which contains 100 billion stars. There is an estimated 100 billion galaxies in our universe, each with billions of stars. Some galaxies have trillions of stars. Many of those stars have planets orbiting them. The most abundant elements in our universe, and in our bodies, may be in the crusts and oceans of some of those planets.

Do you still think we are alone in the Universe?


If you mean other people like us who originated from a blazing sun, has evolved the same way at the same time in history -- NO WAY
0 Replies
 
edgarblythe
 
  1  
Reply Sat 28 Feb, 2015 02:18 pm

BOFFINS: Oxygen-free, methane-based ALIENS may EXIST on icy SATURN moon Titan
'The first concrete blueprint of life not as we know it'


Scientists believe they have come up with a solid model for a new type of methane-based, oxygen-free life form that could thrive in the harsh, icy conditions of Saturn's mysterious freezing moon, Titan.

The researchers over at Cornell University reckon they have come up with "the first concrete blueprint of life not as we know it."

Chemical engineering graduate, James Stevenson, said he had been partly inspired by sci-fi writer Isaac Asimov, who wrote the essay Not as We Know It about the concept of non-water based life in 1962.

Stevenson worked with chemical molecular dynamics boffin, Paulette Clancy, and Cornell's director for radiophysics and space research, Jonathan Lunine, on the project.

As The Register previously reported, Saturn's giant moon Titan is the only other planetary body in the Solar System that has naturally occurring surface liquids – it contains vast seas of methane.

The university's researchers theorised that such a celestial body "could harbour methane-based, oxygen-free cells."

The boffins came up with a cell membrane that they said was composed of small organic compounds and capable of functioning in liquid methane temperatures of 292 degrees below zero.

"We're not biologists, and we're not astronomers, but we had the right tools," Clancy said. "Perhaps it helped, because we didn't come in with any preconceptions about what should be in a membrane and what shouldn't."

Many alien-hunting scientists look for clues of extraterrestrial life in the so-called circumstellar habitable zone, which is the narrow band around the sun where it is believed water can exist.

"We just worked with the compounds that we knew were there and asked, 'If this was your palette, what can you make out of that?' – Clancy

The Cornell bods, who named their membrane an "azotosome", considered what would happen if the cells were based on methane instead of water.
Grad James Stevenson, astronomer Jonathan Lunine and chemical engineer Paulette Clancy, with a Cassini image of Titan in the foreground of Saturn, and an azotosome, the theorised cell membrane on Titan. Credit: Cornell University

Stevenson, Lunine and Clancy with a Cassini image of Titan in the foreground of Saturn,
and an azotosome, the theorised cell membrane on Titan. Image credit: Cornell University

The university said:

The azotosome is made from nitrogen, carbon and hydrogen molecules known to exist in the cryogenic seas of Titan, but shows the same stability and flexibility that Earth's analogous liposome does.

Clancy and Stevenson were surprised by that outcome because they had never previously considered the mechanics of cell stability prior to their study.

Cornell added:

The engineers employed a molecular dynamics method that screened for candidate compounds from methane for self-assembly into membrane-like structures.

The most promising compound they found is an acrylonitrile azotosome, which showed good stability, a strong barrier to decomposition, and a flexibility similar to that of phospholipid membranes on Earth.

Acrylonitrile – a colourless, poisonous, liquid organic compound used in the manufacture of acrylic fibres, resins and thermoplastics – is present in Titan's atmosphere.

The researchers' paper was published in the Science Advances journal on Friday. More "life not as we know it" details this way. ®

http://www.theregister.co.uk/2015/02/28/saturn_titan_azotosome_life_not_as_we_know_it/
0 Replies
 
argome321
 
  1  
Reply Sat 28 Feb, 2015 02:40 pm
@Jpsy,
hmm... perhaps it is me. I interpreted from the beginning that you were asking if we thought that life existed some place other in our universe besides here on Earth. I would say the possibility and probability would seem great.

For me, I would believe more so than not.
0 Replies
 
HesDeltanCaptain
 
  1  
Reply Mon 10 Aug, 2015 07:38 am
@Jpsy,
We humans evolved to this point in just 4.5 billion years or so. The universe is about 3 times as old. The chance we're all there is is 0 percent.
0 Replies
 
Thomas33
 
  1  
Reply Fri 15 Jul, 2016 03:04 pm
No. There'll be thousands and thousands of other A2K's elsewhere in the universe, as there will right-wing governments, and movie calendars and nightclubs.
0 Replies
 
Goliathus
 
  1  
Reply Sat 19 Nov, 2016 09:15 am
It is VERY unlikely that we are alone in the universe. The universe is HUGE. And we only sent robots to nearby planets in our solar system. As u said we are made of most abundant elemts in the universe which means we are nothing special.
0 Replies
 
 

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