The dedicated Science/Space thread!

The dedicated Science/Space thread!

Author
Discussion

Eric Mc

122,086 posts

266 months

Wednesday 14th December 2011
quotequote all
PSBuckshot said:
ewenm said:
PSBuckshot said:
I'd like to know what everything looked like before the universe was created.
Can't even begin to imagine anything at all.
Sounds like you've got it right. Unknowable is as good as it gets for "before" the big bang.
Annoying isn't it.
I find it frustrating that we know so little.
We know more than we did only a short while ago. We are only really beginning the quest.

anonymous-user

Original Poster:

55 months

Wednesday 14th December 2011
quotequote all
Eric Mc said:
We know more than we did only a short while ago. We are only really beginning the quest.
And thats bloody annoying!

Tim330

1,132 posts

213 months

Wednesday 14th December 2011
quotequote all
What happens to a black hole if you put anti matter into it? Does the antimatter annihilate the matter in the singularity?
I've already googled & found the answer to this but thought it an interesting space topic.

Eric Mc

122,086 posts

266 months

Wednesday 14th December 2011
quotequote all
PSBuckshot said:
And thats bloody annoying!
You're just too impatient.

RacerMDR

5,517 posts

211 months

Tuesday 10th January 2012
quotequote all
sooooooo - if we are only seeing light now from stars (N light years away) - which of course we are........that means those stars are much much older than they were when that light was emmitted. If a % of those infinite number of stars have a finite number of habitable planets associated, which is reasonable to assume........

Anyone else find it incredible that no other inhabited planets have evolved enough to travel here yet? I mean, the vastness of it is unfathomable......from a mathematical equation alone all possibilities should be covered.......so why not..........?

Is earth one of the older planets, associated with one of the older stars, and therefore more evolved planets with intelligent life simply don't exist yet? That can't be so......?

That's the bit I find hardest to understand........why are we still alone? Or at the very least.......why have we not even picked up a signal of some sort?



Edited by RacerMDR on Tuesday 10th January 17:01

qube_TA

8,402 posts

246 months

Tuesday 10th January 2012
quotequote all
Because if super-luminal speeds aren't possible, and wormholes, dimensional jumps etc aren't either then to get here from there would take an impossibly long time to do.

Everything is just too far away and getting further away all the time.


RacerMDR

5,517 posts

211 months

Tuesday 10th January 2012
quotequote all
qube_TA said:
Because if super-luminal speeds aren't possible, and wormholes, dimensional jumps etc aren't either then to get here from there would take an impossibly long time to do.

Everything is just too far away and getting further away all the time.

based on our science............surely if you gave us a few million light years of evolution we could come up with something?

Or do you believe we are doomed to never find any 'neighbours' ever?


philis

415 posts

218 months

Tuesday 10th January 2012
quotequote all
How far is the the Kessler Run, and how long is 12 parsecs?


callyman

3,153 posts

213 months

Tuesday 10th January 2012
quotequote all

If there were aliens in our nearest galaxy Andromeda at 2.5 million light years away(our nearest galaxy, it would take them longer than 2.5 million years to come to earth travelling at the speed of light!!!


RacerMDR

5,517 posts

211 months

Tuesday 10th January 2012
quotequote all
callyman said:
If there were aliens in our nearest galaxy Andromeda at 2.5 million light years away(our nearest galaxy, it would take them longer than 2.5 million years to come to earth travelling at the speed of light!!!
when you put it like that.......makes my question sound daft...... biggrin

ok, ok, it was daft

Let's hope faster than light speed can be achieved.......somewhere, by someone at sometime biggrin

Eric Mc

122,086 posts

266 months

Tuesday 10th January 2012
quotequote all
philis said:
How far is the the Kessler Run, and how long is 12 parsecs?
You won't get anywhere in the science forum if you don't know what a parsec is smile

qube_TA

8,402 posts

246 months

Tuesday 10th January 2012
quotequote all
incidentally 'Warp 9' on Star Trek was apparently 1516 times the speed of light, but given the huewgeness of the Universe they were still confined to this 'quadrant' of the galaxy. As going anywhere else seemed just too far-fetched, even for sci-fi.


FeatherZ

2,422 posts

197 months

Tuesday 10th January 2012
quotequote all
I don't think we will have to look as far as another galaxy for life. When there are between 200 billion-400 billion stars in our own galaxy.

With roughly 7,000 being visible, our own galaxy is roughly 100,000 light years across, I don't think we should be thinking of other galaxy's when we don't know anything about our own!

R300will

3,799 posts

152 months

Tuesday 10th January 2012
quotequote all
FeatherZ said:
I don't think we will have to look as far as another galaxy for life. When there are between 200 billion-400 billion stars in our own galaxy.

With roughly 7,000 being visible, our own galaxy is roughly 100,000 light years across, I don't think we should be thinking of other galaxy's when we don't know anything about our own!
I bet there is life. They are just in the same boat as us about the length of time to travel anywhere and can't be arsed. smile

TheHeretic

73,668 posts

256 months

Tuesday 10th January 2012
quotequote all
RacerMDR said:
sooooooo - if we are only seeing light now from stars (N light years away) - which of course we are........that means those stars are much much older than they were when that light was emmitted. If a % of those infinite number of stars have a finite number of habitable planets associated, which is reasonable to assume........

Anyone else find it incredible that no other inhabited planets have evolved enough to travel here yet? I mean, the vastness of it is unfathomable......from a mathematical equation alone all possibilities should be covered.......so why not..........?

Is earth one of the older planets, associated with one of the older stars, and therefore more evolved planets with intelligent life simply don't exist yet? That can't be so......?

That's the bit I find hardest to understand........why are we still alone? Or at the very least.......why have we not even picked up a signal of some sort?



Edited by RacerMDR on Tuesday 10th January 17:01
No, not at all, because the overlapping of their civilization, our civilization, the distance between thewm, and us, and thew billions of other places they could visit, it is not a surprise at all.

philis

415 posts

218 months

Tuesday 10th January 2012
quotequote all
Eric Mc said:
philis said:
How far is the the Kessler Run, and how long is 12 parsecs?
You won't get anywhere in the science forum if you don't know what a parsec is smile
Ok 3PO, enlighten me!

Eric Mc

122,086 posts

266 months

Wednesday 11th January 2012
quotequote all
philis said:
Eric Mc said:
philis said:
How far is the the Kessler Run, and how long is 12 parsecs?
You won't get anywhere in the science forum if you don't know what a parsec is smile
Ok 3PO, enlighten me!
The first thing is that it is not a measurement of time (as Mr Solo seems to think it is), it's a measurement of distance. It equates to about 3 light years or 19 trillion miles.

Good explanation here -

http://en.wikipedia.org/wiki/Parsec

Famous Graham

26,553 posts

226 months

Wednesday 11th January 2012
quotequote all
It's also "Kessel".

RacerMDR

5,517 posts

211 months

Wednesday 11th January 2012
quotequote all
Bedazzled said:
lots of interesting stuff
kind of makes me want to live forever, so i can see what happens...........

R300will

3,799 posts

152 months

Wednesday 11th January 2012
quotequote all
Oxford uni interview question for physics buffs out there. Me and a friend (who had the interview) worked it out one bored physics lesson back in the day.

Q: How many photons are emitted from a 60W lightbulb every second? must show working.

Good luck smile