50 Billion Planets!

[TLAM Strike]

Originally Posted by Castout

Well even if we reach 100% light speed many galaxies are million of light years away we better hurry because the space is expanding and distancing themselves

Not a problem if you can reach 1 c (well you can't but you can reach something like .9999 c in theory) when that happens a wonderful little thing call Time Dilation occurs. Time for the crew of the Spacecraft in flight will change. At .9999 of c it will change by a factor of 70! Basically for every day on Earth the spaceship's crew will travel the distance of 2.59x10^10 km x 70 (approx 1/5th of a light year per day) because from their perspective the universe is traveling 70 times faster, in essence they are traveling though time as well as space.

[Castout]

Originally Posted by TLAM Strike

Not a problem if you can reach 1 c (well you can't but you can reach something like .9999 c in theory) when that happens a wonderful little thing call Time Dilation occurs. Time for the crew of the Spacecraft in flight will change. At .9999 of c it will change by a factor of 70! Basically for every day on Earth the spaceship's crew will travel the distance of 2.59x10^10 km x 70 (approx 1/5th of a light year per day) because from their perspective the universe is traveling 70 times faster, in essence they are traveling though time as well as space.

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i'm afraid I'm too dumb to understand that

[Gargamel]

Just finished reading "Ender's Game" and "The speaker for the Dead" (sequels). They do a decent job of describing the relativistic effects of time dilation on the human person. And they're really good reads too.

[TLAM Strike]

Originally Posted by Castout

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i'm afraid I'm too dumb to understand that

oooo-k... Let me try explaining it to you a different way...

... Planet of the Apes... yes the movie (not the actual planet)... No the original one! You travel at the speed of light around the universe and come back to Earth and billions of years have passed, but you are just a few months older. Got it now?

[Castout]

Originally Posted by TLAM Strike

oooo-k... Let me try explaining it to you a different way...

... Planet of the Apes... yes the movie (not the actual planet)... No the original one! You travel at the speed of light around the universe and come back to Earth and billions of years have passed, but you are just a few months older. Got it now?

Umm I got that idea from the beginning but how I just couldn't understand it logically speaking. I can grab the idea but not understand why it is so.

[kiwi_2005]

we will probably never reach those planets. Maybe in our solar system but not beyond

We would need to figure out or find a

Worm hole.
Black hole - then we would have to suvive the black hole according to scientist eveything breaks up inside the black hole.
Warp drive - speed of light travel.
Gravity.

To travel from one end of the milky way to the other traveling at the speed of light would take 100,000 years.

A worm hole would be the best way to travel we would get to our destination in seconds. Im sure thats how the Aliens do it.

Mass Effect 2 game got me thinking about this.

[TLAM Strike]

Originally Posted by kiwi_2005

To travel from one end of the milky way to the other traveling at the speed of light would take 100,000 years.

Again time is Subjective. For a travel going about the universe at c the time it takes to travel is a lot less. For the Objective observer here on Earth it takes the full 100,000 years to travel make the trip.

I don't pretend to understand it but that is how Relativity works in its counter-intuitive way.

Originally Posted by kiwi_2005

We would need to figure out or find a
...
Black hole - then we would have to suvive the black hole according to scientist eveything breaks up inside the black hole.

I don't see how a Black Hole would help you get anywhere except the great here after. Unless you are talking about harnessing it for power or something.

There is nothing at the bottom of the singularity. Unless you start talking about quantum physics and the destruction of information.

[Raptor1]

Originally Posted by kiwi_2005

Black hole - then we would have to suvive the black hole according to scientist eveything breaks up inside the black hole.

It's quite the opposite, actually, everything is compressed inside a black hole due to the infinite gravitational pull in the singularity, so nothing would quite break apart. Not much use for interstellar travel in either case, though.

[Growler]

Speculation is fun n' stuff, but I've held to this concept:

Not only is the Universe capable of more than we imagine, it's capable of more than we can imagine.

[Gargamel]

Originally Posted by Raptor1

It's quite the opposite, actually, everything is compressed inside a black hole due to the infinite gravitational pull in the singularity, so nothing would quite break apart. Not much use for interstellar travel in either case, though.

I think they do 'break apart', but not in the way being used above. The electron bonds get broken when the atoms get crushed under the immense gravity, therefore releasing the bonds. Since it is a singularity. then the structures of objects no longer exist. The debate in physics continues though over if the information of these structures remains, ie Hawking radiation and all the associated issues.

[Sailor Steve]

Originally Posted by Castout

Umm I got that idea from the beginning but how I just couldn't understand it logically speaking. I can grab the idea but not understand why it is so.

Actually it works both ways. The faster you go the longer it takes the light from your starting point to reach you, hence the slower things there would appear to move (assuming you could see them). Unfortunately relativity works both ways, so the light from your spaceship would have the same problem, so the reality is that time would seem to slow down on earth if you could see it.

Or at least that's the way it would work for two spaceships, since neither one is travelling at all except when compared to the other.

Buuuut...

Gravity seems to throw that all out of whack, so to a person in a gravity well (such as a planet like earth) the spaceship, which has no gravity of its own (none to speak of anyway) really would appear to be passing time more slowly. Here's a simple explanation:
http://en.wikipedia.org/wiki/Time_dilation

And this one's a little easier to understand:
http://en.wikipedia.org/wiki/Twin_paradox

[Schöneboom]

Looks to me like we either get one of these or we ain't going very far:

[krashkart]

So many new places to go and no way to travel to them.