Soldato
If like you are on the ISS, does time exist?
There is no day, no evening, do they even use earth time and seasons?
There is no day, no evening, do they even use earth time and seasons?
Does time exist in space?
- Thread starter craptakular
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Caporegime
They probably just use Earth time.
Soldato
Of course time exists otherwise they'd end up coming back in to earth and landing when nobody expected it!
Soldato
Does time exist in space?
Yes.
Yes.
Soldato
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time is a human concept, it's simply a measurement
we used the earth as a reference
so in answer to your question, let's say you jumped in a space ship and zoomed off to a distant planet 1,000,000,000,000 light years away
Time would exist, if you wanted it to. You would have to create the measurement based on the characteristics of the new planet you landed on. You could say a year would be the time the planet circled it's sun. The only issue is that planet could circle it's sun in the same amount of time our planet circled our sun 100 times.
so 100 years on earth, would be 1 year in your measurements. You could use a different reference, say the new planets moon. or you could use our existing measurements, but that would be silly if you were on the other side of the galaxy. It's like saying aliens use our measurement of time, which would be highly unlikely.
does that make sense?
we used the earth as a reference
so in answer to your question, let's say you jumped in a space ship and zoomed off to a distant planet 1,000,000,000,000 light years away
Time would exist, if you wanted it to. You would have to create the measurement based on the characteristics of the new planet you landed on. You could say a year would be the time the planet circled it's sun. The only issue is that planet could circle it's sun in the same amount of time our planet circled our sun 100 times.
so 100 years on earth, would be 1 year in your measurements. You could use a different reference, say the new planets moon. or you could use our existing measurements, but that would be silly if you were on the other side of the galaxy. It's like saying aliens use our measurement of time, which would be highly unlikely.
does that make sense?
Soldato
They use UTC on the ISS.
Soldato
You'd still age based on our physiology and not be a lot younger than your friends and family when you returned. Unless you travelled a lot closer to the speed of light of course.
Yes, so what is the measurement in space? How do you calculate velocity without a time concept?
Soldato
PARTY TIME!
Caporegime
Yeah you can measure it. It's all relative
Soldato
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humans use our planet as a reference.
the average male lives to around 78. What does that actually mean. Well, 78 times the earth circles the sun.
If you asked an alien how long they lived for, they could answer 2, but they can live longer.
Soldato
Of course, in space, velocity is measured in parsecs.
Soldato
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what's travelling at the speed of light got to do with ageing? surely moving at the speed of light for 1 earth year will age you by 1 year and age everyone else not moving by 1 year?
Soldato
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I really don't get the whole light speed and time travel thing?
say you built a space ship which went 10 times the speed of light. You left earth on full throttle. You travelled at 10 times the speed of light for one week. You could be very far away from the earth, but you have aged a week, and so has everyone else on the earth.
You then travel back which again takes a week. You are two weeks older, but so is everyone else on the earth.
You have basically just travelled a very far distance and back again
where's time travel come into it? How can I travel a week into the future whilst staying put on the earth? (obviously im after the lotto results)
say you built a space ship which went 10 times the speed of light. You left earth on full throttle. You travelled at 10 times the speed of light for one week. You could be very far away from the earth, but you have aged a week, and so has everyone else on the earth.
You then travel back which again takes a week. You are two weeks older, but so is everyone else on the earth.
You have basically just travelled a very far distance and back again
where's time travel come into it? How can I travel a week into the future whilst staying put on the earth? (obviously im after the lotto results)
Not sure if serious or Star Wars reference?
I think a parsec is how far light travels in a year? Not and SF invention.
Soldato
No, that would be a light year
A parsec is also a measure of distance.
The Star Wars reference is due to to Han Solo's claim that he did the Kessel Run in 12 parsecs, thus implying that it's a unit of time (so not quite velocity, but still a misuse of the term).
Soldato
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490 years old, and quite dead