- #1
mtasquared
- 10
- 0
Hello everyone. Thought of this question while at work. I've read the universe appeared out of nothing and expanded very rapidly to near its final state. Would that be flinging matter faster than the speed of light?
mtasquared said:I've read the universe appeared out of nothing
mtasquared said:and expanded very rapidly to near its final state.
mtasquared said:Would that be flinging matter faster than the speed of light?
No, not correct. Observer A can be traveling to left at .99c relative to observer C, and observer B can be traveling to the right at .99c relative to observer C without any problem.mtasquared said:Say you have three observers, with two of them traveling in exactly opposite velocities. To the third observer the maximum speed they can reach is 1/2 the speed of light in opposite directions, correct, since their total velocity must be less than the speed of light?
mtasquared said:Thanks for responding Peter Donis and Mordred and the very interesting info! I have another, tangential question for you (or anyone with a minute) that probably stems from ignorance. I haven't studied relativity. Say you have three observers, with two of them traveling in exactly opposite velocities. To the third observer the maximum speed they can reach is 1/2 the speed of light in opposite directions, correct, since their total velocity must be less than the speed of light?
And must it not be that the speed of one of the two observing observers is somehow dependent on the other opposing observer when viewed from the third observer as the sum of their respective speeds to the third observer must somehow always be less than the speed of light? So in our universe we see galaxies speeding away from the Earth at the near speed of light in one direction; but somehow that 'speed' is dependent on the speed of galaxies moving in the exact opposite direction?
Mordred said:objects can appear to be traveling faster than the speed of light, however the objects themselves cannot travel at the speed of light. For example as a consequence of the recessive velocity * distance relation of Hubbles law
Hubble’s Law: The greater the distance of measurement the greater the recessive velocity
Velocityrecessive = H0 × distance.
Velocity represents the galaxy's recessive velocity; H0 is the Hubble constant, or parameter that indicates the rate at which the universe is expanding; and distance is the galaxy's distance from the one with which it's being compared.
Objects beyond a certain point can appear to be going faster than the speed of light, however if you were to teleport there and observe the object locally it is not. From Earth objects near the furthest observations in the universe "Appear to be traveling at 3C."
take another example observer a is traveling west at 0.9c object b is traveling east at 0.9c. their separation speed from both observers will be 1.8c however neither object is traveling at greater than c locally
The Big Bang theory is the scientific explanation for the origin of the universe. It proposes that the universe began as a single, infinitely dense and hot point, and has been expanding and cooling ever since.
The Big Bang is thought to have occurred approximately 13.8 billion years ago, and expansion of the universe is still ongoing.
According to the theory of relativity, nothing can travel faster than the speed of light in a vacuum. During the Big Bang, the expansion of the universe did not involve objects moving through space, but rather the stretching of space itself. Therefore, the speed of light was not violated during this process.
The Big Bang theory explains the formation of the universe through a process of rapid expansion and cooling. As the universe expanded, particles began to cool and form atoms, which eventually led to the formation of stars, galaxies, and other structures.
Yes, the Big Bang theory is widely accepted by scientists and is supported by a large amount of evidence, including the cosmic microwave background radiation, the abundance of light elements, and the observed expansion of the universe.