About space travel?

If say we were able to send astronauts to say the planet Pluto, and we could establish a live feed communication broadcast, wouldn't the time on earth be going much faster and the time for the subjects on Pluto be going much slower based on the distance between space and time?....hence making live communication useless?.....In that sense, if it were possible for humans to travel deeply in space, they would have to sacrafice years of their life for a lifetime timeframe on Earth?.....example depending on distance traveled: if they went for 3 years in space, they could possibly lose 50 on Earth by the time they get back.

I would think that the distance from earth to pluto and having live communications would not change any time about it,, because they would be spinning around the sun in the same real time that we would, So if earth takes 365 days to make a trip around the sun and pluto for an example takes ten years the actual time would remain the same but on earth it would be one year and on pluto it would be 1/10th of a year but the real time would not change,, Now if you tried that with traveling lightspeed it would be all different,,

Heck I dont even know if I made any sense to you but at least I have the idea grasped,, would ya believe,, I think you were talking about hypathetical senarios here correct??

Yes, that's true. Either I missed your question or you are simply asking a yes or no question.

Even going to Mars there is about a 15 minute delay during communications due to the 250 million mile journey. Because of this, many of the important and precise actions that would potentially be done on a trip to Mars would be done without the assistance from mission control on Earth.

The difference in time is not based on distance but is based on speed. If the astronauts are traveling near the speed of light they will live a couple of years to a lifetime on earth. Having astronauts on Pluto or beyond would create communication problems due to the delay in response. It takes a large amount of time for a message to reach pluto and vice versa, so if you said something today you could expect a response tomorrow.

The time it would take for communications between Earth and Pluto is strictly limited only by the speed of light. Because of this limitation it would take a long time for a signal to make the journey from Pluto to Earth, but time on Pluto would pass at the same rate as on Earth. The only time what's called time dilation occurs is when two different reference frames are moving with a high velocity compared to each other. For example, if Pluto was moving away from Earth at 80% the speed of light and someone on Earth could monitor clocks on Pluto they would appear to be moving slower than clocks on Earth. However, for those people on Pluto time would move along at the same rate as always. All this has to do with Einstein's relativity.

Earth and Pluto though moving very fast thru space barely change the time space around them. Its measurable but the difference is so small that its not worth noting

However if we as humans do develop near light speed travel you then get into the issue of time difference. The closer you to the speed of light the slower time moves for you. So that one second of time for you will be years for those still on earth.

A good example is this. Say we have a craft that will travel to the nearest star. Alpha Centauri. Light takes 4 years to get there. The craft we design will travel 99.99% of the speed of light. To those on the craft only 4 years will pass for them. Those on earth will see decades pass.

Also once they got there and were able to send out a signal it would take 4 years for it to reach earth and 4 years for the answer to get back. 8 years for a simple communitcation makes it hard

So with current tech once people went to a far off place in space.. lightyears away they would effectively be cut off from earth.

I hope that helps

Though you are right though that communication would be hard with people on Pluto. It takes light 8 mins to reach us from the Sun and Pluto is much futher away than the Sun. So while the communication will not take years it will not be like calling your friend on the other side of the world. There will be time delay in the matter of minutes

well as for pluto the signal would just be set back by the time it takes light to travel from pluto to earth. theres no time dilation involved there.

but in the other case yes time dilation would take effect because they would have to travel at a large portion of the speed of light to travel that far, and even at that speed it would be more than 3 years to even reach the nearest star. so at that very fast speed they would age the same as they do on earth, but thats relative to say another astronaut. if they were to return to earth everything would seem much older to them.

ONLY SPEED DISTORTS TIME, NOT DISTANCE. AND ONLY AS YOU APPROACH THE SPEED OF LIGHT WHICH WE WILL NEVER DO.

>If say we were able to send astronauts to say the planet Pluto, and we could establish a live feed communication broadcast, wouldn't the time on earth be going much faster and the time for the subjects on Pluto be going much slower based on the distance between space and time?

No. Any communications from one of the two objects to the other would take an average of over five hours to travel the distance. Similarly, if a telescope on one object was used to watch the other, they would see the other as it was five hours before. However, the actual rate at which time passes on the two objects is almost exactly identical. The difference is so small that it would not be noticeable when the communications were actually received.

>example depending on distance traveled: if they went for 3 years in space, they could possibly lose 50 on Earth by the time they get back.

This depends not just on the distance traveled, but on the speed at which they travel. There is no specific distance that would have a ratio of 3 years to 50 years. Any distance could be done with almost no time discrepancy, provided you move slowly enough. On the other hand, if you move fast enough, it is quite possible to experience not 3 years, but basically as little time as you like (such as one second, or even less) while 50 years pass on Earth. The factor by which the time changes is based on the speed, and the distance is based on the speed and the time that passes 'outside'. However the time dilation factor is NOT based directly on the distance.