Is there life "out there"?

4wd said:
Earth is rather unusual in having a very large moon which has taken a lot of hits from meteors over millions of years.
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Earth is even more fortunate in having Jupiter nearby - in stellar terms. That pulls in an awful lot of meteors etc that would otherwise have caused problems here.

The big question is what happens when our sun runs out of energy. It's about 5 billion years old, and approx halfway through it's life. It will eventually form a red dwarf star and Earth will be swallowed up into it. Whether the outer planets will also be sucked in is anyone's guess.

After that the dying sun will gradually fade away until it falls in on itself under the weight of gravity. This will happen to all of the billions upon billions of stars that are out there.

Then the interesting question. Once all the stars have collapsed will they they all reverse their outward spread and under the weight of gravity come back together. If so will that then lead to another big bang when all the elements start reacting with each other and form a new universe? If that happens what is to say that it hasn't already happened many times over, although each cycle might take a million billion years to complete.

So many questions, but only one certainty - none of us will ever know the outcome!
 
mickledore said:
Earth is even more fortunate in having Jupiter nearby - in stellar terms. That pulls in an awful lot of meteors etc that would otherwise have caused problems here.

The big question is what happens when our sun runs out of energy. It's about 5 billion years old, and approx halfway through it's life. It will eventually form a red dwarf star and Earth will be swallowed up into it. Whether the outer planets will also be sucked in is anyone's guess.

After that the dying sun will gradually fade away until it falls in on itself under the weight of gravity. This will happen to all of the billions upon billions of stars that are out there.

Then the interesting question. Once all the stars have collapsed will they they all reverse their outward spread and under the weight of gravity come back together. If so will that then lead to another big bang when all the elements start reacting with each other and form a new universe? If that happens what is to say that it hasn't already happened many times over, although each cycle might take a million billion years to complete.

So many questions, but only one certainty - none of us will ever know the outcome!
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You meant red giant. You're also describing the long outdated Big Crunch theory. There simply isn't enough gravity to reverse the expansion. The opposite is happening in fact. The expansion of the universe is increasing in speed as time marches on.
 
Cobra said:
Well it has now so come on .............................
:D
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The answer might be a few light-beers away. I'm only on my second and warp speed is forbidden during the week. :)
 
From listening to various experts and physicists who came to the conclusion that there are more stars in the universe than there are grains of sand on the Earth. They know about a lot of stars in our galaxy, and that's a drop in the ocean compared to the whole universe, that are similar to our sun then the likelihood that not one of those stars has planets with similar atmosphere to ours must be miniscule.

I just don't see how all the reports of UFO's that have been reported throughout history can all be false. I saw 3 lights in a triangular pattern too far away to see what they were coming from. They were dead still for around 5 minutes, than immediately moved to another location, after a few seconds they immediately did the same thing again and a few seconds later they they shot off upwards so fast I could barely trace them until after a second or so they were gone. There was nothing I can think of flying around today that could of been responsible for the way the lights moved ie perfectly still, moved a long way, perfectly still, moved a long way, perfectly still, moving rapidly away.
 
I certainly don't dis-believe that fact that you saw a UFO.
After all it was un-identified.

I've seen a few un-explained things too, one not too dis-similar from yours.

But you would have thought by now, that someone would have got a clear definitive
image of one.
Not the grainy shaky OoF images that are apparently "flying saucers" :shrug:
 
ZoneV said:
The really crazy thing (although it's all pretty crazy tbh) is that there was no "before". Space and time are intrinsically linked and neither existed before the BB.

It's ok though, it's not just us - nobody understands it yet. :D
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That's it in a nutshell.
 
Cobra said:

But you would have thought by now, that someone would have got a clear definitive image of one.
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maybe someone has :suspect:
 
Well actually nothing went "Bang" as we understand the expression
it was a rapid expansion.

More Here
 
Cobra said:
Well actually nothing went "Bang" as we understand the expression
it was a rapid expansion.

More Here
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That is actually an interesting read. Still leaves one headscratching, though:-

"Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning. Prior to that moment there was nothing; during and after that moment there was something: our universe."

So there was nothing then a moment later there was something. Very good explanation :lol:
 
Oh come on folks, the answers are HERE
 
arclight said:
So there was nothing then a moment later there was something. Very good explanation :lol:
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I think you are expecting too much. Over the past decade we've made huge leaps forward in cosmology and the understanding of the structure and nature of the universe. The current upgrading of the LHC will help in the quest to understand one of the greatest of mysteries; What are dark matter and dark energy?
You, me, your computer, house, this planet, sol - our star, the galaxy, everything we can see is composed of atoms. Yet we know that all of everything accounts for less than 5% of the mass-energy of the universe. This other sort of matter (that doesn't emit or absorb light, that isn't detectable in any part of the electromagnetic spectrum) betrays its presence through its gravitational influence over normal matter. When we gaze into space we're only managing to see a small percentage of what's actually there. It's there, but invisible. What is it? Cosmology is fascinating!
 
Cobra the answer is here it's 42. :lol:

In all seriousness I just don't believe we are the only intelligent life form in the universe. I have also seen unexplainable things that I believe would answer the question.
 
Davec223 said:
Cobra the answer is here it's 42. :lol:

In all seriousness I just don't believe we are the only intelligent life form in the universe. I have also seen unexplainable things that I believe would answer the question.
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What were they?
 
Even if there was life out there why would they be interested in us?
 
Food? Fuel?

We'll need an "alien species" contract in place, just in case:

"Human predation will not be tolerated under any circumstances" should do the trick. :)
 
But, is breeding for food predation or simply farming?

Given the numbers, there has to be life elsewhere in the uniomniverse but I doubt any of us will ever meet it!

SETI obviously exists - they have a website and everything but have yet to prove the existence of ETI.

UFOs exist - I saw one last night! (Well, it was in the sky so flying, "it" implies an object and I can't identify it positively...)
 
ZoneV said:
Food? Fuel?

We'll need an "alien species" contract in place, just in case:

"Human predation will not be tolerated under any circumstances" should do the trick. :)
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Not likely they suggest as they are a type 2 civilization with stuff like interstellar flight and the ability to harness the power of stars for everyday energy. We'd have nothing they need or want, they probably have microwave ovens that make anything like in star trek. We're simply the wildlife and they control the boulder cam. Which is probably why we've no photos of their vehicles as I imagine the camouflage and surveillance of such a civilisation is almost beyond our comprehension, let alone within our sight.
 
Maybe we taste delicious to them, like the giant tortoise did to us.

Reminds me of one episode of QI where they were discussing how, hundreds of years ago, adventurers used to capture some examples of any new species they found whilst on their travels, and take them to the academics for official classification when they returned. Apparently, the poor giant tortoise was so tasty it took an age and many adventures before it was classified because they kept getting eaten on the ship before reaching home. :lol:

Edit: Found it. :D

[YOUTUBE]coFiAUjTWLE[/YOUTUBE]
 
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I have always believed there is other life out there, we are ignorant to deny the claim when all we have done is put a man on our own poxy moon. Again even more ignorant to claim that an alien civilization is incapable of intergalactic travel, just because we can't manage it yet.

At the end of the day we can only travel and explore with the raw materials,equipment and scientific knowledge we currently possess. After all the cure of all diseases and the elixir of life could reside on a planet in the next solar system, but because we don't have it here and now we say that it doesn't exist. I mean for as long as I know scientists have been trying to figure out how to use rocket propulsion as a way to travel long distances using long lasting fuel... That may be the complete wrong way to look at it, but its the only thing we know.

Over 5000 species of bugs and animals are discovered on our own planet each year, 5 years ago we wouldn't even know they existed or believe they existed. I don't think many people can really grasp the pure scale of how huge the universe really is, there are many websites that can give you a clue, in fact Ebaums world did one a few days ago

Check this out

http://www.ebaumsworld.com/pictures/view/83352730/
 
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Forbiddenbiker said:
We all could see Betelgeuse go supernova at any time soon. ..that would be the mother of all fireworks displays hey. ...although hopefully we don't get gamma rayed crispy while we watch, Oops.
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I'm sure we would all see it coming too with the time it takes to travel here. Its just completely breathtaking that Canis Majoris in its full size if viewed on a 1080 screen makes our sun (sol) look like a single pixel. Its just huge beyond any comprehension
 
Betelgeuse is a very interesting star. When it does blow (which could be tomorrow) it will be as bright as a full moon in the sky. It's also the only star whose surface features have been photographed.
 
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