Time travel

  • I
  • Thread starter LYCON
  • Start date
  • #1
3
0
How can we travel back and forth in time?

And is it really possible?
 

Answers and Replies

  • #2
Ibix
Science Advisor
Insights Author
9,149
8,913
Forward in time is easy. I go forward a day every day.

Backward in time is probably impossible. There are solutions to the equations of general relativity that permit it, but they are generally believed to be unphysical. That is, we can describe a universe with "loops" in it that allow you to cross your own history, but the distribution of mass and energy needed to create it is impossible (negative energies or other stuff that doesn't exist).
 
  • Like
Likes Dream Master JP

Related Threads on Time travel

  • Last Post
2
Replies
55
Views
8K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
12
Views
3K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
19
Views
4K
  • Last Post
Replies
13
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
7
Views
2K
Top