How fast is the universe expanding? New supernova data could help nail it down

[Admin]

A warp in the fabric of space and time that acted like a giant magnifying glass may help solve a celestial mystery about the rate of the universe's expansion.

How fast is the universe expanding? New supernova data could help nail it down : Read more

 

[rod]

"The new findings suggest a value of about 41.4 miles (66.6 km) per second per megaparsec for the Hubble constant. This is much closer to the CMB value than the one from supernovas and Cepheids. Still, the level of uncertainty in the data means "we cannot exclude the supernovae value," Kelly said."

Pinning down H0 remains difficult and reconciling different methods that yield different results. Using H0 = 74 km/s/Mpc and redshift = 0, cosmology calculators show universe age = 12.906 Gy. Using H0 = 66.6 km/s/Mpc, age of universe = 14.339 Gyr.

 

[rod]

Here is an update, H0 = 85.3 km/s/Mpc using FRBs now. The Hubble constant hits keep on coming in

Measuring the Variance of the Macquart Relation in z-DM Modeling, https://arxiv.org/abs/2305.07022, 11-May-2023.

My notes. Using https://lambda.gsfc.nasa.gov/toolbox/calculators.html, calculator the age of the universe using H0 = 85.3 km/s/Mpc = 11.197 Gyr. The light time distance or look back distance for z=2.0 is 8.490 Gyr or 8.49 billion light-years from Earth. Major differences for the age of the universe and other distance measurements show up using H0 = 85.3 km/s/Mpc.

 

[Atlan0001]

"The new findings suggest a value of about 41.4 miles (66.6 km) per second per megaparsec for the Hubble constant. This is much closer to the CMB value than the one from supernovas and Cepheids. Still, the level of uncertainty in the data means "we cannot exclude the supernovae value," Kelly said."

Pinning down H0 remains difficult and reconciling different methods that yield different results. Using H0 = 74 km/s/Mpc and redshift = 0, cosmology calculators show universe age = 12.906 Gy. Using H0 = 66.6 km/s/Mpc, age of universe = 14.339 Gyr.

Universally no information is ever created or destroyed. The figure of 14.339 Gyr. is in fact (-)14.339 Gyr. Add (+)14.339 Gyr, future to arrive at '0'. The dimensionality still isn't complete. The 'Mule' of 'Mirror' hasn't so far been taken in account, (+)14.339 Gyr. from '0', (-)14.339, to equal '0'. Ah, checks now, the balance of nature, the circle ([past (future) | future (past)]) is complete. Don't forget entropy. Don't forget "equal but opposite reaction" side (the contraction side) of the same coin that expansion is an equal but opposite side of. And the contraction doesn't mean squishing, not in and regarding Chaos Theory's coin of "zoom" universe's countless telescoping (macro-scoping / micro-scoping) "cone" levels of zoom outs / zoom ins. Countless . . . limitless . . . zoom. The more the universe expands in that direction toward infinity, the more the universe, meaning our local universe, and all the local universes, contract toward the infinitesimal, the pivot and finale being '0', the 'Mule', the 'Mirror', the 'Anti', the 'Neutrality'.

Again, some might then say we exist in a local finite subjectively relative warp spacetime bubble hologram universe, a mirage. Maybe so but that is far from being a bad thing with the possibilities of such a Lewis Carroll 'Alice in Wonderland: Through the Looking Glass' universe . . . remembering that, Lewis Carroll; real name Charles Dodgson, was, under his real name, a well-known theorist in mathematics, logic, and so on, and a precursor visionary to the micro-world quantum mechanical theorists who followed. It works just fine as long as Dr, Samuel Johnson gets to kick the rock and maybe hurt his toe (circa 1687CE).

I can't seem to help occasionally (and both at once as the two sides of one and the same coin of multiverse universe) expanding hyperspatial levels to infinity, and equally but oppositely contracting hyperspatial levels to infinity, the universe on my own terms the way I see it to be. It follows observation but does it in a more dimensional horizontal-vertical "zoom" universe mode of revelation rather than [fix the universe flatly "absolutely rigid!" here, "stretch!" the universe flatly absolutely there, a flat-rubber-sheet conventional wisdom mode].

The finite local-relative life cycle, a turning circle or wheel, and the countless-ness of wheels, of time, within the non-local, non-relative, immortality (T = 0|1 . . . and parity) of the infinities of horizons of the universe (the infinities of universes) does not change.

 

[robindahood]

Well a smart man spends his lifetime searching for the right answer but a wise man will spend his lifetime searching for the correct question.
Why do we speak as if we know for a fact our universe is expanding? do we know for a fact it is and I'm just missing something. It's like our solar systems our house and we finally managed to step outside the front door on to our stoop and say oh hell I figured out the entire neighborhood or city just because we can see past the front door for the first time. How do we know the universe is truly expanding. We have just now gotten outside of our own personal space and for the matter of what I would be equivalent to milliseconds and the grand scheme of things, We can tell the direction that the surrounding galaxies are moving apart from each other. Others on a collision course with each other at the same time!!! Its like a ballroom of swirling dance partners we're destined to partner with the Andromeda. At a certain point ... Even if you were to be looking at our own satellite the Moon it would appear to be moving further from the Earth at a certain point in it's orbit . It would be obvious it's falling towards the Earth at another point in it's orbit but only when you wait long enough do you understand the concept of angular momentum it's coming back around this is the way the entire dance floor is working. Its just like water circling the drain in our superfluid universe, things first being pulled towards the drain and to the outer vortex would be getting further away from each other before they would get pull back into one singularity. If We can imagine ourselves not being the big guys the way we think about it and look at ourselves in the quantum aspect. And if that's so and gravity has such a powerful effect on space and time there are millions and trillions of years break down to milliseconds in the grand scheme. I think we become so convinced of our own intelligence we close our eyes to answers right in front of our faces convinced we got it right. It's like I always tell my little brother I'm the smartest dumb person you'll ever meet or maybe I'm the dumbest smart person you'll ever meet or maybe that's where we are as a species at this point. I apologize I wanted to come up with some sort of fact or epiphany or something new and enlightening on the subject.. but this is what you got

 

[rod]

Different methods thru the years, result in different values for H0.

82 km/s/Mpc, https://ui.adsabs.harvard.edu/abs/1997ApJS..108..417Y/abstract

78.3 km/s/Mpc, https://ui.adsabs.harvard.edu/abs/2021MNRAS.tmp..648Q/abstract

75.1 km/s/Mpc, https://phys.org/news/2020-07-approach-refines-hubble-constant-age.html