Can the Universe Travel Faster Than Light and Time Travel?

  • Context: Graduate 
  • Thread starter Thread starter arcbishop
  • Start date Start date
  • Tags Tags
    Acceleration
Click For Summary
SUMMARY

The discussion centers on the misconception that the universe itself can travel faster than light or engage in time travel. Participants clarify that while objects within the universe can move relative to each other at speeds exceeding the speed of light, the universe as a whole does not travel. The current cosmological model asserts that there is no external space for the universe to collide with, rendering the idea of the universe crashing into something nonsensical. A foundational understanding of cosmology is necessary to grasp these concepts accurately.

PREREQUISITES
  • Basic understanding of cosmology and the structure of the universe
  • Familiarity with the theory of relativity and its implications on speed and motion
  • Knowledge of the concepts of acceleration and expansion in the context of the universe
  • Awareness of the Big Bang theory and its significance in cosmological discussions
NEXT STEPS
  • Study the implications of Einstein's theory of relativity on cosmic motion
  • Research the concept of cosmic expansion and its effects on the universe
  • Explore the Big Bang theory and its role in the formation of the universe
  • Learn about the nature of spacetime and how it relates to the speed of light
USEFUL FOR

Astronomy enthusiasts, physics students, and anyone interested in understanding the fundamental principles of cosmology and the nature of the universe.

arcbishop
Messages
2
Reaction score
0
will acceleration and expansion cause the universe to travel faster than light or a critical state to where itself travels back in time.
if so would it be able to stop if it crashed into something big as it self (big bang)?
 
Last edited:
Physics news on Phys.org
I have no idea what you mean by the universe "traveling". Where is it goiung?
 
arcbishop said:
will acceleration and expansion cause the universe to travel faster than light or a critical state to where itself travels back in time.
if so would it be able to stop if it crashed into something big as it self (big bang)?

Pretty nonsensical question. The universe doesn't travel, things IN the universe travel. None of them exceed the speed of light, although they do travel faster than the speed of light RELATIVE TO EACH OTHER.

Since our current model says there is no "outside" to the universe, the concept of it crashing into something is just silly.

You really need to do a lot of basic reading to get some understanding of this stuff.
 

Similar threads

High School The expansion of the Universe and time travel (By a non-scientist)
  • · Replies 2 ·
Replies
2
Views
2K
High School c^2 in Einstein‘s theory of relativity
  • · Replies 10 ·
Replies
10
Views
2K
High School Can Curved Spacetime Enable Faster-Than-Light Travel?
  • · Replies 12 ·
Replies
12
Views
4K
Undergrad Is there really nothing faster than light?
  • · Replies 40 ·
2
Replies
40
Views
5K
High School Time Travel: Can Humans Go Faster Than Ordinary Speed?
  • · Replies 9 ·
Replies
9
Views
2K
High School Let me ask a thing about the Speed of Light
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Time & Gravity in Rotating Faster Than Light?
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad Can Time Travel Into the Future Really Happen?
  • · Replies 19 ·
Replies
19
Views
2K
High School Backwards Time Travel: Can We Influence Our Casual Past?
  • · Replies 19 ·
Replies
19
Views
3K
High School Experience Travel on a Photon: Hitch-Hiker's Guide to the Universe
  • · Replies 7 ·
Replies
7
Views
2K