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You mean, are you asking if your god could have made a young universe look as if it were old? Well, in principle, sure, why not? Your god is claimed to be all-powerful, after all. In principle, an all-powerful god could do anything at all. But the problem with that is that it presupposes that your god is deceptive. And if you believe there is an all-powerful deceiver god out there, then you can't trust anything at all.
Well, there are two ways in which gravity can affect the redshift. One is if the light is coming from very, very close to an extremely dense object, such as a black hole. The other is due to intervening space-time curvature.
As far as the light coming from very close to an extremely dense object is concerned, well, this generally isn't a problem, because the vast majority of things we observe are not matter falling into black holes. And of those that are matter falling into black holes, typically we see not only matter that is just about to enter the black hole but also matter that is further away, so we can easily correct for the effect.
As far as intervening space-time curvature is concerned, well, that's the same as relative velocity. That may sound a little bit strange, but in General Relativity, whether a far-away object is moving away from us or not depends entirely upon what coordinate you use. I can describe a far-away object as moving away and the intervening space-time curvature as being flat, or I can describe a far-away object as being stationary and the intervening space-time curvature as being highly curved. In either case, I get the same redshift. It just depends on what coordinates I use. Whether the expansion is due to space-time curvature or velocity are just two different ways to talk about the exact same physical effect.
No. The stars very far away are very far away.No.... God is not deceptive. It is our human flaws and limited scientific tools to even measure these distances. Are you crazy? God could have just made it recently and flung the heavens out when in fact it's only few thousand years. Stars are very far away indeed. But to measure these distances based on the redshift and the brightness of these stars - that's just impossible.
4.5 billion years ago, when the Sun and Earth first formed, the Earth took about 6 hours to rotate. This equates to 3 hours of sunlight, 3 hours of daylight, not factoring in seasonal variation.Consideroing the spin down rate of the earth. How long was the first day?
How much sun light and how how long was the darkness?
No.... God is not deceptive. It is our human flaws and limited scientific tools to even measure these distances. Are you crazy? God could have just made it recently and flung the heavens out when in fact it's only few thousand years. Stars are very far away indeed. But to measure these distances based on the redshift and the brightness of these stars - that's just impossible.
Ok, if the moon is moving away from the earth, how long ago did the moon bounce off of the earth.4.5 billion years ago, when the Sun and Earth first formed, the Earth took about 6 hours to rotate. This equates to 3 hours of sunlight, 3 hours of daylight, not factoring in seasonal variation.
Got an actual refutation to the very detailed explanations you were given other than your personal belief that it's "impossible"?
Ok, if the moon is moving away from the earth, how long ago did the moon bounce off of the earth.
The Moon formed around the same time as the Earth did, about 4.5 billion years ago. Its original distance was about 20,000 km from the Earth, but as it recedes from the Earth, this distance has increased to its current value of about 384,000 km. However, this recession velocity is itself variable, and although it's a paltry 3.8cm/yr now, it was quite faster in the past. Nonetheless, the closet the Moon has been was 20,000 km - closer than today, but by no means bouncing off the Earth.Ok, if the moon is moving away from the earth, how long ago did the moon bounce off of the earth.
I think it's quite darling.BTW, what do you think of my avatar?
Err... no, it's not. Chalnoth and myself just went through how it works. Why do you think it's impossible? What fundamental logical flaw have we made that renders it impossible?No.... God is not deceptive. It is our human flaws and limited scientific tools to even measure these distances. Are you crazy? God could have just made it recently and flung the heavens out when in fact it's only few thousand years. Stars are very far away indeed. But to measure these distances based on the redshift and the brightness of these stars - that's just impossible.
Let's say a strange comes up to you. He says that aliens created the Earth, and gave it a green sky. You tell him, "What are you talking about? Look up! The sky is blue!" He says to you, "But that's just our flawed and limited understanding. It's really green. The aliens just put a filter on the sky to make it look blue to us."No.... God is not deceptive. It is our human flaws and limited scientific tools to even measure these distances. Are you crazy? God could have just made it recently and flung the heavens out when in fact it's only few thousand years.
It's not trivial, but it is nowhere near impossible. To people that have actually studied this stuff, telling them that you can't measure distances to stars is like telling somebody they can't look up and see the blue color of the sky. It's nuts. The way it is done in reality is through a large variety of methods which are checked against one another for consistency. Each method has different assumptions, and if you change the laws of physics in one way, e.g. by changing the speed of light at early times, then different distance measurement methods will give you very different results.Stars are very far away indeed. But to measure these distances based on the redshift and the brightness of these stars - that's just impossible.
It's not an assumption. Not in the least. Because light is an electromagnetic wave, its behavior is intertwined with the behavior of the electromagnetic force. You cannot change the speed of light without changing the behavior of the electromagnetic force, and thus the behavior of matter. So when we see matter very far away that is acting in a manner consistent with the laws of physics we measure here on Earth, we gain confidence that the speed of light cannot have been very different when the matter emitted that light.And something can absorb the light and only be like 20 feet away. You can make the wrong assumption thinking that because it's far away, therefore it must take that same amount of time for light to get here. Error in logic right there.
Here is a silly question I have:
Helium balloons rise because they are lighter than the surrounding air. Since a helium balloon's contents is sealed off from the surrounding air, how does it know to rise? (if it can't interact with the surrounding air)
Could these sort of disturbances be used to transmit information instantaneously?
I'll take a stab at it. (Hope it doesn't pop!)
It is because the sum of the mass of the ballon fabric and the helium is lighter than the surrounding air (less dense). That is, the whole balloon including the mylar/elastic/whatever is less dense than the air.
Imagine a balloon of a traditional size made of lead. It doesn't rise because the whole object including the lead is too dense.
ETA: I don't know what you mean by distrubances. Sorry.
So how does the moon tilt the earth?closer than today, but by no means bouncing off the Earth.
Mythbusters actually got a lead balloon to fly.Ya just need a larger balloon for the lead balloon to work
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