Space!

PostRe: Space! by **SEP** » Fri May 01, 2015 10:04 pm

So does this mean we'll have warp drive in time for the Vulcans to be flying through our solar system?

PostRe: Space! by **That** » Fri May 01, 2015 10:11 pm

There's nothing to suggest, as of yet, that this will violate special relativity. But it's certainly an exciting technology - if it works as advertised!

PostRe: Space! by **Alvin Flummux** » Fri May 01, 2015 11:07 pm

I really hope that this tech is workable, and that it sees advancement and practical use within our lifetimes. Imagine, going from the moon to the farthest edges of the solar system and beyond within a century.

:mrgreen:

PostRe: Space! by **floydfreak** » Wed May 06, 2015 12:03 am

http://www.nasa.gov/feature/goddard/ast ... nce-record

Astronomers Set a New Galaxy Distance Record

An international team of astronomers, led by Yale University and the University of California scientists, pushed back the cosmic frontier of galaxy exploration to a time when the universe was only 5 percent of its present age of 13.8 billion years. The team discovered an exceptionally luminous galaxy more than 13 billion years in the past and determined its exact distance from Earth using the combined data from NASA’s Hubble and Spitzer space telescopes, and the Keck I 10-meter telescope at the W. M. Keck Observatory in Hawaii. These observations confirmed it to be the most distant galaxy currently measured, setting a new record. The galaxy existed so long ago, it appears to be only about 100 million years old.

More in link provided :shock:

PostRe: Space! by **That** » Wed May 06, 2015 12:13 am

Look at all of those galaxies. Each with a hundred billion stars; most of those with planets; and of those many - I am sure - filled with life.

I wonder how many civilisations we are looking at in that photograph - how many astronomers on alien worlds have photographed us, in our Milky Way, without any chance of knowing we are here. Are there other people on other planets, thinking about this too, right now? With the number of solar systems in the Universe I am absolutely certain of it.

PostRe: Space! by **1cmanny1** » Wed May 06, 2015 7:53 am

Maybe, but the sad thing is we will never find out.

PostRe: Space! by **Moggy** » Wed May 06, 2015 8:08 am

1cmanny1 wrote:Maybe, but the sad thing is we will never find out.

You never will but that's because NZ is trapped underneath the Earth and cannot see the stars.

PostRe: Space! by **1cmanny1** » Wed May 06, 2015 8:34 am

But we are getting close to the moon.

I think.

PostRe: Space! by **Moggy** » Wed May 06, 2015 8:54 am

1cmanny1 wrote:But we are getting close to the moon.

I think.

Just stay away from the savage dogs of NZ. :shock:

PostRe: Space! by **Qikz** » Wed May 06, 2015 9:33 am

Karl wrote:Look at all of those galaxies. Each with a hundred billion stars; most of those with planets; and of those many - I am sure - filled with life.

I wonder how many civilisations we are looking at in that photograph - how many astronomers on alien worlds have photographed us, in our Milky Way, without any chance of knowing we are here. Are there other people on other planets, thinking about this too, right now? With the number of solar systems in the Universe I am absolutely certain of it.

I'm always interested to learn how many of those solar systems in the distant universe have/had multiple planets harbouring life at the same time. Would they have gone to war after discovering each other? Created a peace agreement to team up and explore their galaxy or would they have gone it alone ignoring each other? It's always cool thinking about things like that.

There's probablly other species sat like us claiming there's no other life in the universe, because we haven't seen it yet.

PostRe: Space! by **Moggy** » Wed May 06, 2015 11:33 am

Qikz wrote:
Karl wrote:Look at all of those galaxies. Each with a hundred billion stars; most of those with planets; and of those many - I am sure - filled with life.

I wonder how many civilisations we are looking at in that photograph - how many astronomers on alien worlds have photographed us, in our Milky Way, without any chance of knowing we are here. Are there other people on other planets, thinking about this too, right now? With the number of solar systems in the Universe I am absolutely certain of it.

I'm always interested to learn how many of those solar systems in the distant universe have/had multiple planets harbouring life at the same time. Would they have gone to war after discovering each other? Created a peace agreement to team up and explore their galaxy or would they have gone it alone ignoring each other? It's always cool thinking about things like that.

There's probablly other species sat like us claiming there's no other life in the universe, because we haven't seen it yet.

Well, a long time ago in a galaxy far, far away...

PostRe: Space! by **That** » Wed May 06, 2015 11:41 am

May the 6th be with you.

PostRe: Space! by **Captain Kinopio** » Wed May 06, 2015 8:15 pm

floydfreak wrote:http://www.nasa.gov/feature/goddard/astronomers-set-a-new-galaxy-distance-record

Astronomers Set a New Galaxy Distance Record

An international team of astronomers, led by Yale University and the University of California scientists, pushed back the cosmic frontier of galaxy exploration to a time when the universe was only 5 percent of its present age of 13.8 billion years. The team discovered an exceptionally luminous galaxy more than 13 billion years in the past and determined its exact distance from Earth using the combined data from NASA’s Hubble and Spitzer space telescopes, and the Keck I 10-meter telescope at the W. M. Keck Observatory in Hawaii. These observations confirmed it to be the most distant galaxy currently measured, setting a new record. The galaxy existed so long ago, it appears to be only about 100 million years old.
More in link provided

I don't even understand that photo.

I see it a lot but it may as well be a photoshop, and I'm not convinced it isn't, because I can't comprehend how it's taken or how it is able to show what it's supposed to show.

PostRe: Space! by **That** » Wed May 06, 2015 9:00 pm

Perhaps we can help?

The photo is taken by pointing Hubble at an area of space which looks 'empty' - e.g. there are no stars or nearby galaxies at that location.

This allows us to 'see out' from our galactic neighbourhood and observe the wider universe.

If you imagine a city surrounded by mountains: if you're standing on a street and look around, you'll mostly see buildings, but at the right angle you might imagine peering through a gap in the buildings and taking in the view.

What we see when we do this with Hubble are the multitude of galaxies at the furthest extent of the visible Universe.

The light from really distant galaxies is very faint, but with a long enough exposure time and the steadiness of camera that space - with no wind, heat, or vibration - can offer, we can produce a photograph.

Of course, because light is pretty slow (over the scale of the Universe), we see these galaxies not as they are now, but as they were several billion years ago.

What we've started to do now is find 'empty' areas in these images, and expose the photograph for even longer focused on that spot. And then find an empty spot there, and do it again. This allows us to see further and further away. (Imagine, from the right angle, peering past the buildings, past a gap in the mountain range, and seeing an ocean beyond.)

And, again, because light is slow, we see those galaxies as they were further and further in the past.

We are now starting to get to the point where we can see, very faintly, some galaxies as they were almost 14 billion years ago. Because this is close to the age of the Universe, we know we are seeing the very first stars in the very first galaxies. If we were to attempt to look past those, we won't see anything more - because we will gazing at a time in the Universe's history when there was no light!

PostRe: Space! by **Oblomov Boblomov** » Wed May 06, 2015 9:26 pm

What if we aren't looking towards the middle bit it all expanded from? Would we see Jesus holding a sign saying 'Turn your camera left a bit' or is this one of those weird things where it turns out wherever you look will eventually show you the 'middle'?

PostRe: Space! by **That** » Wed May 06, 2015 9:41 pm

Imagine inflating a balloon half-way and drawing lots of dots on it. Hold the balloon such that you are staring straight at one of the dots. Continue to inflate the balloon. 'Your' dot will stay stationary, but every other dot will move away from it. Repeat the experiment with some other special chosen dot: you'll get the same result.

It turns out that in any uniformly expanding space - be it "spherical" like a balloon, "flat" like a table or even one of those weird "hyperbolic" geometries you may have heard of - the bit you're in will always look like the centre.

PostRe: Space! by **Moggy** » Sat May 30, 2015 11:55 am

Was Lister playing pool again?

PostRe: Space! by **SEP** » Sun Jun 14, 2015 12:22 pm

Philae is alive!

http://www.bbc.co.uk/news/science-environment-33126885

PostRe: Space! by **That** » Sun Jun 14, 2015 12:23 pm

Philae

PostRe: Space! by **Fuzzy Dunlop** » Sun Jun 14, 2015 12:33 pm

Space!

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