B What is the speed of the Earth traveling through the cosmos?

AI Thread Summary
The discussion centers on the speed of Earth as it travels through the cosmos, particularly in relation to the Cosmic Microwave Background (CMB) rest frame, which is approximately 300 km/s. Participants debate the concept of a "true speed" of Earth, suggesting that the lack of a universal frame of reference complicates the understanding of its motion. The speed of light is consistently recognized as approximately 300,000 km/s in all non-accelerating frames, and the idea of a "cosmos frame" is dismissed as non-existent. The conversation highlights the challenges of measuring speed in relation to an undefined cosmic reference. Ultimately, the thread concludes with a call for clearer communication and adherence to forum standards.
john1800
Messages
5
Reaction score
1
what is the speed of Earth as it travels the cosmos,compared with the center of the universe.lets say the big bang starting point.?
 
Astronomy news on Phys.org
john1800 said:
lets say the big bang starting point.?
There is no such thing. The closest you can get to a concept such as this is to find the relative speed between the Earth and the CMB rest frame. This speed is around 300 km/s.
 
so we don't now the Earth speed,or direction in space.the true speed at least.my question is.if we don't now the speed or direction of Earth we are.but we measure something with a speed in relation of CBM frame.that we can't go over it even in mathematics.and its always the same.can we imagine that this speed may be 0 in relation not the CBM but the space.?!
 
john1800 said:
the true speed at least
It is not a question of not knowing something like the true speed, it is a question of the concept not existing.
john1800 said:
if we don't now the speed or direction of Earth we are.but we measure something with a speed in relation of CBM frame.that we can't go over it even in mathematics.and its always the same.can we imagine that this speed may be 0 in relation not the CBM but the space.?!
From this it is completely unclear to me what your question is.
 
my question is.if the speed of light in relation of the space is 0,and we are traveling with the speed we mesure as its speed.will it solved all the problems we have with its speed? is this a possibility?
 
john1800 said:
if the speed of light in relation of the space is 0
What does this mean? The speed of light is not zero. This makes your post read like word salad.
 
its not zero in relation of CBM frame.it may be zero in relation of cosmos frame.lets say.can it be?
 
john1800 said:
its not zero in relation of CBM frame.it may be zero in relation of cosmos frame.lets say.can it be?

The speed of light is c, approximately 300,000 km/s, in all non-accelerating reference frames. Note that there is no such thing as a 'cosmos frame'. You cannot assign a frame of reference to space itself or the entire universe.
 
i now,You cannot assign a frame of reference the entire universe,but maybe that is the problem,maybe that is why It doesn't vary whether the observer is moving or not.maybe that is why you can't to go faster.you always can go faster.you can not be slower than zero.thats probable.o_O
 
  • #11
john1800 said:
i now,You cannot assign a frame of reference the entire universe,but maybe that is the problem,maybe that is why It doesn't vary whether the observer is moving or not.maybe that is why you can't to go faster.you always can go faster.you can not be slower than zero.thats probable.o_O

Unlikely.
 
  • #12
@john1800 please read the PF forum rules on post quality. Your posts are illegible word salad with punctuation thrown into randomly replace spaces. This type of communication may be acceptable when communicating with your friends by text, but not when communicating with professional scientists at PF. Please write with proper spelling and punctuation.

This thread is closed.
 
Last edited:
  • Like
Likes john1800, davenn and Bystander
Back
Top