Is their such things as aliens??? and just how big is space?????

Answer 1

So far we've seen no verifiable evidence of other sentient species. That said, I believe with some certainty that somewhere in our galaxy at some past, present, or future time, a sentient species did/does/will exist.

Why haven't we heard from them?

Perhaps they are not technologically advanced enough to be heard. They may be mastering stone knives right now, or experiencing their own Rennaisance.

Perhaps they are here right now. Any species sufficiently advanced to travel interstellar distances would be able to hide or masquerade with ease. That Boeing 737 that just flew by may be a surveillance craft.

Perhaps they are so far away they will never notice us and vice versa.

Perhaps they existed a million years ago and died out.

Perhaps they will exist a million years from now.

It is really impossible to know for sure.

The Drake Equation suggests that there is sentient life out there. The Fermi Paradox casts doubt. Play around with the calculation form at the second link and see what you think.

Answer 2

Yes, there are aliens - many come to England for from war-torn parts of eastern europe! As for extra-terrestrials anyone can come on and say 'yes' or 'no' but the truth is we just dont know for sure.

There's no evidence yet but with the growing understanding of extra-solar planetary systems, the facts point to the idea that there may be hundreds of millions of planets orbiting the 30 billion stars in our galaxy alone. There are also over 100 billion galaxies, some much larger than our Milky Way. Many will be in the right place to support life. The planets we've detected so far have all been super gas giants, larger than Jupiter but thats only because they're the ones big enough to make their suns 'wobble' when they go around them - and thats how scientists detect them.

The initial formation of replicating molecules may be quite a difficult and rare event but since we're here the chances are good that it can happen elsewhere.

As for space I'm not sure its entirely as mysterious as many people answering seem to think! Some people love a mystery. If you take the Big Bang theory seriously and believe in the data then evidence suggests that this space time bubble we call the Big Bang is about 13.8 billion light years across - and expanding at an increasing rate. regards.

Answer 3

I haven't seen any aliens but space if finite because gravity bends space and you can't go faster than the speed of light. If you went in a straight line at the speed of light you would eventually get back to where you started due to this curvature caused by the matter in the universe (assuming a perfectly symmetrical central gravitational field). Since all objects in the universe are subject to these laws, the diameter of this circle is the maximum size of the universe.

Answer 4

Space is unimaginably big - so big that even experienced physicists admit that they can't get their heads round how vast it is.

Try this on for size - within our own Milky Way, there is somewhere between 3 and 100 billion stars. The nearest galaxy to us (Andromeda) has around 600 billion stars. In the observable universe there are around 300 billion galaxies, with a similar number of stars in them.

To reach even just the closest star to us (Alpha Centuri) would take 4 and a half years, travelling at the speed of light, which is currently impossible.

There isn't, and never has been, even the smallest shred of evidence to either suggest or preclude the possibility of life outside of this planet (although, that evidence might soon be with us thanks to new discoveries on Mars).

But I personally feel that, given the enormity of the universe, and the number of stars and (probable) planetary systems within in - it's rather unlikely that we are alone.

Answer 5

we've hunted for them and their a probability abodes and found no longer something to point out that they exist. as for this reason of the initiatives consisting of SETI and the Kepler project, we are in a position to now say with extreme self assurance that there is not any longer likely to be the different liveable planets interior various hundred mild years of Earth. certainly we be taught from the Kepler project that sturdy planetary platforms are particularly uncommon. There are as a result possibly to be very few in our galaxy. Then even a liveable planet would not propose that that's certainly inhabited. subsequently we are possibly to be the only civilisation presently modern-day in this galaxy. some human beings speculate approximately spacemen in different galaxies. in spite of the incontrovertible fact that on the grounds that such beings could be completely previous all detection and touch variety, their lifestyles or in any different case is irrelevant. So confident, we are on my own. Cheers!

Answer 6

If by 'aliens' you mean beings from other worlds, the answer is that there is no evidence whatever of their existence. The idea is purely fantasy and presumably derives from the excited imagination of fiction writers.

As far as the size of space is concerned the answer is 'it is as big as it needs to be'. You might think that this answer is evasive but, within the limits offered by Answers, it is the best reply I can give!

Answer 7

The best answer to both of those questions come from fiction.

Aliens--- If there aren't any, then the universe is an awful waste of space (Carl Sagan, Contact)

Size of Space---"'Space,' it says, 'is big. Really big. You just won't believe how vastly, hugely, mindbogglingly big it is. I mean you may think it's a long way down the road to the chemist, but that's just peanuts to space.'"
Hitchhiker's Guide to the Galaxy. Douglas Adams.

Cheers!

Answer 8

Ok, getting ready for the Boo factor, here it goes.

I have personal first hand experience that UFOs and E.T's exist. Let's just say i"m a mechanical engineer from Cincinnati, Ohio.

Space is incalculable for our minds to conceive, it is massive but not without end. Once again this personal first hand knowledge. Still "they" had only calculated its boundary, not it's end. It seems that just like the universes there are multiple spaces somewhat akin to the cells of biological life. Makes you wonder huh?

Answer 9

the probability for other life in the universe has to be greater than that of us being the only life in the universe. and as to evidence well we`ve barely got the means to scratch the surface, modern astronomy has detected probable planets around some stars, and it is highly likely that this is the norm, given that the latest astrononical survey puts the number of stars in the known universe at 70 sextillion,(thats 70,000,000,000,000,000,000,000,000)stars thats a lot of probable planets, and it also means that space is very big!

Answer 10

yes there are aliens (ie people or organisms living away form their own homes... thinking of Stings Ilegal Alien song)
are there extra terrestrial aliens...
.........as yet No... doens't mean there aren't just no one, except those that claim to have been abducted have seen proof of them.

Personally I think its highly unlikely Earth is the only planet with life on it. Its possible there may be other forms of life out there, just that we dont know that. We make assumptions that other life forms will take a similar pattern to Earth... ie being carbon based. current tests in our own solar system are limitied to looking for carbon and water.... whic knows waht may be living in different solar systems.

and how big is space? who knows ... effectively to our primitive means of observing or exploring its virtually infinite (we dont knwo its boundaries, we dont even know if there are boundaries).