Fire-Starter James's latest activity
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Fire-Starter James replied to the thread An asteroid will hit Earth at some point. What can we do about it?.The DART experiment knocked a lot of debris off of the asteroid. If used near the Earth, it could deflect the asteroid, but not the... -
Fire-Starter James replied to the thread An asteroid the size of a bus will fly near Earth on Feb. 22 — but don't worry (video).I can't find the video.
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Fire-Starter James replied to the thread Question Hubble's Law.If we set H(0)=72.431... things get interesting ~13.5 BLY. The wavelength ratio is ~e. K/s@1Mpc → linear/c relative/c...
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Fire-Starter James replied to the thread Question Hubble's Law.There's no such thing as "traveling through space", because space is just the distance between objects. Space has no absolute reference...
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Fire-Starter James replied to the thread Question Hubble's Law."There is no such thing as absolute motion . . . there is only relative motion!" ‒ Exactly!
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Fire-Starter James replied to the thread Question Hubble's Law.Using the hyperbolic tangent version of Hubble's Law, no recessional velocities ever exceed C, even in an infinite universe. Changing...
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Fire-Starter James replied to the thread Question Hubble's Law.We should also expect higher masses at farther away, appearing to get denser with distance. At some point, it might appear to be a huge...
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Fire-Starter James replied to the thread Question Hubble's Law.I understand the distinction being made. I just don't understand why we should assume it makes a difference. Redshift works the same...
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Fire-Starter James reacted to drwayne's post in the thread Hubble's Law Predicts Constant Deceleration? with
Like.
I thought Ho was in units of 1 / time - but it has been a long time since my last astrophysics class, so I could be, well, duhhhh.... Wayne -
Fire-Starter James replied to the thread Question Hubble's Law.:) That's about as far as I've got. No clue as to why that would be. But the tanh() function predicts something like the Hubble Tension.
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I'm no expert, but my understanding is that Hubble expansion does not obey relativity, it sums arithmetically and can go faster than c.
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Fire-Starter James replied to the thread Question Hubble's Law.The differential equation: V(a+b) = ( V(a)+V(b) ) / ( 1+ (V(a)*V(b)/C^2) )
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Why is Hubble's Law V(r) = Hr? It contradicts the relativistic addition of velocities. I know this leads to a differential equation...
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