If i were to travel the whole milky way and come back, i know i would be dead, but how old would i be?
540450
well, this really isn't a question about astronomy, but imagine the trip were possible, and you could travel as close to lightspeed, c, as you chose.  special relativity shows that you could choose how long the trip would take by choosing your speed.  the distance of the trip will shrink more and more the faster you choose to go.  if the trip were to cross the galaxy (100 000 ly) and you traveled at:\n0.9999c (9 x 10e-4) the distance would look like 1000 ly and take 1000.10001 years.\n0.999999c (9 x 10e-6) the distance would look like 100 ly and take 100.0001 years\n0.99999999c (9 x 10e-8) the distance would look like 10 ly and take 10.0000001 years\n\nthis is actually observed in nature.  high speed cosmic atomic nuclei are continuously raining down on earth, and sometimes one strikes the nucleus of an atom in the upper atmosphere and produces a muon.  muons are very short-lived and shouldn't have time enough to reach us down here before decaying, but they do.  the muons are traveling so fast that they see the distance between the upper atmosphere where they originated to here as much shorter than we do so they have enough time to travel the short distance before decaying.\n\nlook here:\nhttp://en.wikipedia.org/wiki/Special_relativity
48780
That all depends on how old you are.
467493
It would depend on what my quality of life was. I certainly wouldn't want to carry on for years and years if I was incapable of looking after myself and travelling.
389633
For every million years that'll pass when you're dead you'll only be alive for a brief second. There is plenty of time for death, while only a little time for life. You might as well take the time you get to be alive and make the most of it. \n\nTalk to someone, a friend, family member, trusted adult, doctor, or anyone.  Just talk to someone and get help.
2475
no.I believe you will die at 100 years.Are you happy now???You should not think too much, or consult a doctor and find another work to do.Don't worry,be happy!
51296
When you die.  Or, when you begin to feel old!
94798
The money.  Who wants to be stuck on this planet forever?  It's be cool for about a century than you would just wish that you could commit suicide.  I've only been on this planet for 20 years and already contemplate suicide everyday... Just imagine.
979045
No. Life would be very boring. I would not miss the joys and sorrows of getting older.\n\ncc
598523
Heaven is all around you right now.  It is a state of being and not a place.  You will not have a body once you leave this one and so age is irrelevant.
545597
I would go to outer space. Orbit earth a couple times and then land on the moon for a little moon walking.
1057166
Congratulations. You are doing very good. I dare to tell you that you would easily achieve your 100 years old. Keep on doing the things that you do. Even if you feel well, visit your doctor regularly.Good luck.
1100180
Well that is really hard to answer, A point 13 billion light years as referenced from what? Remember that they earth is in orbit around the sun, the sun is in orbit around the galaxy, the galaxy itself is moving.\nIf we assume the universe is about 15 billion years old the universe was quite a bit smaller. So obviously the object would have been closer. But are you talking about something that is moving towards us? moving away? we need some reference point to even begin thinking about answering this question.\n\nThis is like asking "how far away was a car moving 60 miles an hour, and hour ago?" was the car coming towards us, away, moving parallel, are we in another car? how fast are we travelling?\n\nDo you see that you need to qualify your answer, in order for us to answer it.
1054614
Time travel is very possible. You are travelling in time right now, but just at a slow pace.  If you move a lot faster than someone else you will be travelling in time slower than they are.  But if you travel at 95% of the speed of light for 10 years (relative to you), you'd have travelled 11 and a half years relative to someone who is not travelling with you!  This is due to a phenomenom called Time Dilation and is part of Einstein's Theory of relativity.  \n\nYou could say you have travelled 1 and a half years in the future over 10 years.  If you travel even closer to the speed of light for the same amount of time you would have travelled even further into the future.  The equation for time dilation is T=T(0)/(sqaure root of(1-(v/c)^2)).  Where T is the time according to someone staying still, T(0) is the time according to you, v is the speed you are travelling, and c is the speed of light.\n\nTravelling back in time is not yet proven to be feasible but it is thought, by many major scientists believe it would involve bending the universe (which may or may not be possible depending on the type of universe we have) or travelling to a parrallel universe, which would really on have the affect of time travel.\n\nOne major flaw of all these is that returning to the time of your original place is impossible or hard to do.
1098442
Oh, my god! We're doomed. This means that on June 6th, 2106 I'll be dead! I won't live to be 135 years old. Oh, man! This is so unfair! I'm already depressed! June 6th., 2006 is a terrible day, after all. :-)
1051785
You would go until you died of course. Assuming you'd never die, you'd never stop travelling in that spaceship. That's what infinity means. It's hard to grasp that idea, but space never ends...
1120811
I'd go back to when my mom was still alive and healthy. \nI'd also go to 1955 and get to know James Dean.
193083
It would take 4.3 years to get to the nearest star (Proxima Centauri) if you were traveling at the speed of light. However, it would take nearly 118,000 years to get there if you were traveling at the speed of a space shuttle (approximately 25,000 mph).