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[Wired] Astronomers Discover Millions of New Black Holes and a Rare Type of Galaxy - Page 2

post #11 of 149
Quote:
Originally Posted by tech junkie View Post

Its awesome to think that alien lifeforms could be currently observing our galaxy and watching it form. Just imagine these life forms watching when the suddenly pick up messages by Voyager 1 and are able to trace it back to Earth. BEFORE they even see any planets created in our galaxy. Pretty crazy if you think about it.

Voyager 1 is so relatively close to Earth, if any lifeform could home in on a signal from Voyager they would be able to trace it to Earth very quickly.
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post #12 of 149
Quote:
Originally Posted by tech junkie View Post

Its awesome to think that alien lifeforms could be currently observing our galaxy and watching it form. Just imagine these life forms watching when the suddenly pick up messages by Voyager 1 and are able to trace it back to Earth. BEFORE they even see any planets created in our galaxy. Pretty crazy if you think about it.

Voyagers signals aren't going faster then light, so they would not get them while seeing an old image. Unless they're using alien technology and it was all a secret plot...
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post #13 of 149
It's still crazy to think that even in the 21st century the furthest man has ever been is the moon, and the furthest man made probes have travelled ie; Voyager 1 and 2 are just leaving our solar system. We have such long way to go.....

The number of possible planets around stars in our galaxy alone will keep us busy for the next 4-5 million years (that's if humans are still around), we may never ever travel to another galaxy no matter how far in the future we are talking or what technology is used. It's way beyond anything imaginable. Sad but true...

Given that the speed of light is impossible for anything that has mass, humans won't be going anywhere quickly.
Edited by Mhill2029 - 8/29/12 at 3:53pm
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post #14 of 149
More of these kinds of threads. Less threads about Apple. thumb.gif
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post #15 of 149
Quote:
Originally Posted by Laurifer View Post

More of these kinds of threads. Less threads about Apple. thumb.gif

^ Oh how I agree. biggrin.gif

Now reverse the macro scale of space and go micro and try to understand the vastness that lies between proton and an electron, and the vastness of relative space between quantum bits and pieces...... eek.gif
    
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post #16 of 149
I love space. biggrin.gif

But as someone else said, the black holes could have turned into a super-massive black hole by now for all we know.
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post #17 of 149
Quote:
Originally Posted by lordikon View Post

10 billion light years away at the time that light was emitted, based on the observation that almost all galaxies are moving away from each other, it's probably much further away than that now. As you travelled towards it at the speed of light, it would still appear to not be getting closer to you at the speed of light, the result being that after 10 billion years of light speed travel it would still be quite far away from you.
It's insane to think about it, but the Voyager satellite, sent out in the late 70's, and has been travelling multiple times faster than a bullet from a gun, for 30+ years, has only travelled about 16 light hours. Now imagine what a light day, month, or year is. And now imagine what 10 billion light years are.
The scale of space is absolutely insane. Here's something to blow your mind. If the visible universe were the size of Earth, then our solar system would be the size of a dust particle, and Earth would be 1/180th the size of a single atom.

Actually, wrong.

If you traveled towards something at the speed of light*, time dilation would mean that the object you're travelling towards would appear frozen in time. *Note that you can't actually travel at the speed of light, only asymptotically approach the speed of light, and the faster you travel, the more things around you slow down.
post #18 of 149
Quote:
Originally Posted by trcvrs View Post

Actually, wrong.
If you traveled towards something at the speed of light*, time dilation would mean that the object you're travelling towards would appear frozen in time. *Note that you can't actually travel at the speed of light, only asymptotically approach the speed of light, and the faster you travel, the more things around you slow down.

Yeah, that's how going faster than something else works....

Joking tongue.gif

But yeah, you'd never get to the speed of light as your mass increases exponentially as your speed tends to C.
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post #19 of 149
Quote:
Originally Posted by trcvrs View Post

Quote:
Originally Posted by lordikon View Post

10 billion light years away at the time that light was emitted, based on the observation that almost all galaxies are moving away from each other, it's probably much further away than that now. As you travelled towards it at the speed of light, it would still appear to not be getting closer to you at the speed of light, the result being that after 10 billion years of light speed travel it would still be quite far away from you.
It's insane to think about it, but the Voyager satellite, sent out in the late 70's, and has been travelling multiple times faster than a bullet from a gun, for 30+ years, has only travelled about 16 light hours. Now imagine what a light day, month, or year is. And now imagine what 10 billion light years are.
The scale of space is absolutely insane. Here's something to blow your mind. If the visible universe were the size of Earth, then our solar system would be the size of a dust particle, and Earth would be 1/180th the size of a single atom.

Actually, wrong.

If you traveled towards something at the speed of light*, time dilation would mean that the object you're travelling towards would appear frozen in time. *Note that you can't actually travel at the speed of light, only asymptotically approach the speed of light, and the faster you travel, the more things around you slow down.

So you could fly all the way into the that galaxy and it would still appear at the same distance as when you left Earth? I realize time slows down around you as you travel faster, I'm just not sure what this would look like if you were looking at something that you were traveling at.

Almost completely unrelated:
If two particles are going in opposite directions at the speed of light, when they hit each other, is it like hitting something at twice the speed of light (which isn't possible)? In a much slower example, two cars travelling at 50mph hit each other head on, it's the same effect as a car going 100mph hitting a stationary car head on. So does this work at speeds like the speed of light as well?
Quote:
Originally Posted by Paradigm84 View Post

Quote:
Originally Posted by trcvrs View Post

Actually, wrong.
If you traveled towards something at the speed of light*, time dilation would mean that the object you're travelling towards would appear frozen in time. *Note that you can't actually travel at the speed of light, only asymptotically approach the speed of light, and the faster you travel, the more things around you slow down.

Yeah, that's how going faster than something else works....

Joking tongue.gif

But yeah, you'd never get to the speed of light as your mass increases exponentially as your speed tends to C.

These were hypotheticals, I realize something with mass cannot travel the speed of light.
Edited by lordikon - 8/29/12 at 5:04pm
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post #20 of 149
Quote:
Originally Posted by Abs.exe View Post

It would take you 10 billions years to get there if you could go at the speed of light, which results into this math :
Knowing that the speed of light is 1,079,252,848.8 kilometres per hour.
10,000,000,000 * 1,079,252,848.8 = 107 925 248 480 000 000 000 000 000 000 Kilometers from earth.
*Note : Speed of light is relative since we are now aware that some denser elements accelerate/slowdown the light.

This is hilarious!!!!! I hope that was the intent
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