We May Be Alone In The Milky Way After All (says Brian Cox)

[KareemK]

http://www.bbc.co.uk/news/science-environment-2968...

(The Human Universe, BBC 2 tonight at 9pm)

That'll cheer up the god-botherers.

[KareemK]

^^^

And thats just the 'observable' universe no?

We actually have no idea what lies outside of that if I'm remembering my Physics lessons correctly.

[KareemK]

If you apply Occam's Razor to the Fermi Paradox you get your answer which is roughly in line with Brian Cox's.

[KareemK]

jbudgie said:

KareemK said:

If you apply Occam's Razor to the Fermi Paradox you get your answer which is roughly in line with Brian Cox's.

Yes, but Cox was only talking about the Milky Way, not the universe.

So am I.

[KareemK]

jbudgie said:

KareemK said:

jbudgie said:

KareemK said:

If you apply Occam's Razor to the Fermi Paradox you get your answer which is roughly in line with Brian Cox's.

Yes, but Cox was only talking about the Milky Way, not the universe.

So am I.

That's fine then, so why mention it ???????????????????????????

Because Occams Razor likely explains the fermi paradox (in relation to why we haven't detected Aliens in our galaxy).

When you expand that to the Universe then I'd say the inter galactic distances involved pretty much explain that situation even if they exist by the bucket load in Andromeda etc.

[KareemK]

TwigtheWonderkid said:

cold thursday said:

The thing that I struggle with is the concept of "Nothing"

As in "Nothing existed before the big bang".

So there was Nothing (no time,space, matter...... etc)

Then there was this "Big Bang" and the universe existed and started expanding.

Expanding into what? When you blow up a balloon, it expands into the space around itself. But if there is no space outside the uninflated balloon, if there is nothing, what would it expand into?

I believe the latest theories involve an initial expansion from and into a pre-existing 'quantum foam'.

[KareemK]

Quatum Foam protagonists say that there is and never has been such a thing as 'nothing'.

No matter how 'Empty' the vacuum of space appears it is actually filled with quantum foam and quantum foam has always existed even prior to the big bang when there was no 'space'.

Yes, I know, I can't get my head around it either

[KareemK]

I took it (and hence the thread title) that Brian was saying that he thought it was very possible that there is no other (multi-cellular) life in our Galaxy but almost certain that there would be elsewhere in the Universe.

[KareemK]

jmorgan said:

The Cox man speaketh.
https://twitter.com/ProfBrianCox/status/5269706688...


"FOR LAST TIME: I think life is common in universe. We MAY be only civ. in Milky Way. There WILL be other civilisations in univ. #shutupnow"

Which is what I said he said and hence the title of the thread