Universe

Is it possible for distant galaxies to be moving away from us faster than the speed of light?

And if it is would it be possible for us to see them?

Surprisingly the answer to both questions is a resounding YES.

How is that possible? How can something travel faster than the speed of light?

Today we will try and paint an accurate picture of the Universe based on the Lambda-Cold-Dark-Matter model, which is the best cosmological model today.

Once we have painted that picture, the answers to our questions will be straightforward.

Category:

Science & Technology

Tags:

• universe
• galaxy
• star
• earth
• sun
• space
• light
• speed
• Lambda
• Cold
• Dark
• Matter
• Heisenberg
• Uncertainty
• Principle
• quantum
• mechanics
• Planck
• Length
• mass
• energy
• inflation
• volume
• scalar
• fluctuation
• dark
• matter
• particle
• photons
• quarks
• electrons
• big
• bang
• event
• horizon
• billion
• gravity
• gravitational
• doppler
• redshift
• hubble
• sphere
• expand
• expansion

[ewack77]

It is a very well made video. Well put together with a good theme, however it is riddled with flaws. I don't blame the film maker for these flaws, for he/she is basing this video on what is being taught. I don't even blame the physicists who teach physics. I blame our modern understanding of physics. Our modern understanding of the model of the universe is seriously flawed. There have been several arguements brought up here that are valid, especially "where's the center of the universe?"

[cassiopeiaproject]

@ewack77 From an observer on earth or anywhere else, any MEASUREMENT of the speed of light in a vacuum will result in about 186,000 mps. Relativity is correct if a reference frame can be defined that two observers agree upon. And matter separating faster than the speed of light because the space between two objects is expanding is NOT the same thing as matter traveling THROUGH space at the speed of separation. ANY actual MEASUREMENT of the speed of light will yield c.

[cassiopeiaproject]

But there is no possible way to measure the speed of light if the space between two observers is expanding faster than light can travel across that space.

[ewack77]

Wow! You are forgetting one small but important thing. E=mc2 for one thing. Think about. For another I'll give you an example of the speed of light. If I was traveling away from you at the speed of light and I shot a beam of light back towards you, you would see the light. It would not stand still. Which is what you propose.

[cassiopeiaproject]

@ewack77 The limits imposed by the speed of light only apply once you have established a reference frame. In the Universe video, there is no reference frame that you can choose where the speed of light limitation has been violated.

[MrPlaiedes]

... Attempt to repudiate the logos and pathos with mythos.

[MrPlaiedes]

It doesn't make for a very productive argument to explain the ideas and concepts of this video to the religiously outspoken. For these individuals faith is just as much a cultural property as it is an ethereal property of spirituality. You process that the universe is expanding and they rebut with a quote from the bible. The logic is I'll-structured from the beginning. It would serve a greater purpose if the folks would make efforts to more readily accept their fellow Christian sects than to at

[x5cycling]

we live in the future.

[ryanduds]

If distant stars are 15billion light years away, this would state that the universe is larger than 15billion light years, but the universe is younger than 15billion years. So does that mean the early universe expanded faster than the speed of light?

[nas19811]

nothing times(X) zero,(or singularity) = bilions and bilions and bilions and bilions and bilions galaxies, or allmost infinitely quantity of mater, eeeeeeee scientess where is the logic here, or u maybe mised something, but u have mised much more than u ever think.

[08jkern]

@abobjenkins No scientist is "diametrically opposed to the purposes of God". The theories they come up with might challenge the archaic thinking proposed by the Bible, but they aren't opposed to God. They simply don't accept an answer like God did it. To demonize scientists like that poses such a barrier for Christians to accept what they have to say, which, unfortunately for Christians, are the only people who can actually help or save any one.

[abobjenkins]

@08jkern True science is simply this: a study of the universe God created.  It is not the lies and deceit concocted by those who are diametrically opposed to the purposes of God.

[08jkern]

@abobjenkins sure does make a complex universe" and get on with your life. Stop clinging to your primitive, shepherds tales of the universe. Never once has the answer to any of life's questions been magic, like your Bible says. Its science. Get use to it.

[08jkern]

@abobjenkins in and out of existence from their parent particle all the time. Your common experience is based on living inside a planets gravity and atmospheric pressures at a certain point in space. Your common experience doesn't have any precedence on what is actually happening in the other 99.99999% of the universe. Scientists simply want to observe the universe and discover how it works. When we prove your nonsense of a seven day creation story, get the fuck over it, and just say "well God

[08jkern]

@abobjenkins Christians. Scientists have questions, create and perform experiments that they think will give them answers to these questions, and then make conclusions. Whereas, Christians have questions, create conclusions, steal scientists experiments and data, and then only use the information that supports their hypothesis......And you're absolutely right. Your common experience isn't conducive to create something from nothing, but in quantum physics and the vacuum of space, particles pop