Einstein's Twin Paradox

  • #1
say the rocket had a engine, which produced to get the rocket to go at the speed of light but then it ran out of fuel and the rocket would slow down. what would be the age difference between them? say both were 24 one on earth and one on return journey from a nearby star system.
 

Answers and Replies

  • #2
russ_watters
Mentor
19,855
6,276
General_Relativity19 said:
say the rocket had a engine, which produced to get the rocket to go at the speed of light but then it ran out of fuel and the rocket would slow down. what would be the age difference between them? say both were 24 one on earth and one on return journey from a nearby star system.
That isn't even close to being a coherent thought. Could you try again please? The one part that made any sense - the part about the rocket slowing down - is wrong. Rockets do not slow down in space without engines firing to slow them down.
 
  • #3
russ_watters said:
That isn't even close to being a coherent thought. Could you try again please? The one part that made any sense - the part about the rocket slowing down - is wrong. Rockets do not slow down in space without engines firing to slow them down.

ok so what if the there were engines that fired to slow them down?
 
  • #4
58
1
Well, your question is kind of sketchy, but if im reading it right...
since light has no notion of time (time freezes when you are travelling the speed of light), the space ship in space would be equal to 24 (it would remain unchanged, and the space ship on Earth would have continued aging at a normal rate...
 
  • #6
Gokul43201
Staff Emeritus
Science Advisor
Gold Member
7,051
18
Does the spaceman come back to Earth to compare ages ? You don't specify which frame you are measuring in ? Are you asking because you want to know...or because you want to see what other people know ? In other words, is this a doubt or a brain teaser ? The latter does not belong here.
 

Related Threads on Einstein's Twin Paradox

  • Last Post
Replies
6
Views
3K
  • Last Post
Replies
16
Views
5K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
8
Views
2K
  • Last Post
2
Replies
28
Views
8K
  • Last Post
Replies
1
Views
1K
Replies
8
Views
768
Replies
10
Views
3K
  • Last Post
Replies
14
Views
3K
  • Last Post
Replies
2
Views
2K
Top