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/sci/ - Science & Math

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File: 55 KB, 1080x720, hubble.jpg [View same] [iqdb] [saucenao] [google]
5112823 No.5112823 [Reply] [Original]

When hubble does its deep field look 23 billion light years into the past thing which was it it looking?
Towards the big bang or away from it?
I drew a diagram to explain it better, is it looking in direction A, or direction B?

>> No.5112827

My guess is A because any light from the start of the universe would have travelled past us and away by now.
Also does this mean we can see the end of the universe approaching by looking back in the other direction?

>> No.5112828

The picture is wrong. The Big Bang did not occur at a single point. It occurred everywhere at once. Therefore it is in every direction. Also, there is no edge.

>> No.5112831

>>5112828

If the universe is expaning it must be expanding from a direction, so is hubble pointing towards it or away from it?

>> No.5112836

>>5112831
>If the universe is expaning it must be expanding from a direction

No. It is not an expansion in space, it is an expansion of space. There is no motion involved at all, things are just getting bigger.

>> No.5112837
File: 72 KB, 800x600, Hubble_Ultra_Deep_Field_diagram.jpg [View same] [iqdb] [saucenao] [google]
5112837

looks like i was right it was A

>> No.5112841

>>5112837

1/10

>> No.5112845

>>5112841

Why is it 1/10?
and why is the age of the universe going down the further out you go?
man im more confused than before now.

>> No.5112848

>>5112823
>23 billion light years into the past

lel

>> No.5112850

>>5112828
Why are you assuming this is a spatial diagram?

>> No.5112854

The recent Wilkinson Microwave Anisotropy Probe (WMAP) measurements have led NASA to state, "We now know that the universe is flat with only a 0.5% margin of error>>

and the plot thickens more, ok i think thats where im getting confused about what shape the universe even is

>> No.5112853

>>5112845
It goes down because the light you're looking at is coming from so far away that the universe was new when it was emitted.

>> No.5112871

>>5112854
I'm pretty sure they mean it's flat in the 4th dimension

>> No.5112882

The big bang is in every direction, all of space expended form the big bang so in every direction you can see the "big bang". The CMBR shows this well as it is seen across the whole sky.

The expansion of space time is not matter moving outwards from an explosion but the distances in between objects getting larger. This is why Hubble's law depends only on distance not on direction.

>> No.5112893

>>5112871
>flat in the 4th dimension
Please stop, my sides can't take any more.

>> No.5113058

Elliptic, Euclidean, Hyperbolic

>> No.5113064

The universe is expanding like the outside of a balloon, but in all directions.

>> No.5113081

>>5113064

that metaphor tends to make one think that is is the spherical 'surface' of a hypersphere...

which will make this guy laugh.

>>5112893

>> No.5113302

Expanding is bad word to use, think of it like stretching. If you cook raisin bread for example and you're one of the raisins every other raisin inside the bread is moving away from you because the bread is stretching and everything is moving away from each other at the same speed. If the big bang happened in a direction we would see galaxies moving towards us at the same speed we are moving away but no matter where we look in the sky everything we observe is moving outwards.

>> No.5113304

>>5113302

>moving outwards
Relative to where we are so away from us.

>> No.5113316

>>5112850
>Why are you assuming this is a spatial diagram?

You think this is a clever question, but it's actually just stupid.