Recent content by stuart100

Yes, some numbers do line up occassionally, like slot machines( I avoid them). I am suspicious of too much good luck also.

Thanks for clarification. My main aim was to see if I could work thru the arithmetic.

I was trying to follow how Hubble constant supposedly works. If it is about 70 km/sec/Mpc, then the the expansion at 13.8 Bly distance is about the speed of light. That, if I got it right, seems too convenient don't you think. I know it's not the same start to finish. Thanks if you can correct...

Thanks. I did suspect something like that given the photon is an EM wave. With the universe running on probabilities it's doing very well. I guess space over billions of light years is not a sufficiently dense medium to produce an apparent slowdown.

Thanks for the info, especially; "This can be equated to a 'recession' velocity, so in some sense it is not fundamentally different from the redshift associated with simple motion..." I keep forgetting how fuzzy things get in the micro. So, even though the distance ahead of the photon expands in...

On a long trip the photon goes, but it occupies a wavelength of space at any particular time. If the space between start and finish (inspection) is expanding all the way all the journey time, then most of the expansion has no effect on the photon. Like eg second tenth is section currently passed...

Look, I had to digest a lot from answers to first question. Still, I'm missing some main idea. As far as we look in any direction we can see stuff out there from long ago. A grenade explodes in some void. The material travels outward as a sphere of leading faster bits. Slower material follows...

I like how the math breaks down near infinities. I never liked them anyway. They could have gone deeper in year twelve to give us more hints. Thanks for that. Stuart100.

My first question. I was taught in school about Big Bang as a theory of physics, so then if the entire content of our universe came out from one tiny point boundary over a finite span of time, would that mean the content was finite?

Greetings, fellow Earthlings and certain others. I'm from Australia and am a vineyard worker. People say the firm ground we're standing on is zooming along in space. Well, I'd like to know just what's going on. Things have changed since year 12 in 1971, but I have picked up contrary ideas like...