yajvan
21 July 2010, 01:34 PM
hariḥ oṁ
~~~~~
namasté
We are informed by astrophysicists that the universe is expanding.
The measurement, as I am informed¹, is called the Hubble constant. It suggests an expansion rate of 48 miles per second per 3.26 million light-years or 77 kilometers per second per 3.26 million light-years. This has been updated from 71 km/s/Mpc, within 5% of error, a number from 2003 so I am told.
So, my question for our esteemed scientist's on HDF and those that wish to take a stab at this question. All around me I see space, I am made of molecules and scientist say they too are ~ 90% space. Why is it I do not see some change, so differences in my surroundings or environment if the universe is expanding? In fact I am told it is the ~space~ that is expanding specifically.
One answer as I can only presume is the amount of change is very small; 48 miles over 3.26 million light years is a very small amount.
I agree if we're only talking 1 second of time. Yet note the following as I calculate 'big'.
In one day there's 86,400 seconds. That suggest, in one day, the expansion that occurred = 4,147,200 miles
In one year then the expansion would be 4,147,200 X 365 days = 1,513,728,000 miles.
I am 58 years of age , so the universe has expanded 58 X 1,513,728,000 = 87,796,224,000 miles during my life time.Now wouldn't you think I'd notice this even slightly ? that my house is a bit to the left or right then it was a few years ago :) ? Or the street I live on is now a bit further when I drive home? Or more importantly I have grown a few more millimeters and I am taller, yet none of this occurs. What then of NASA shooting for a planet , and the planet moved?
What's up with this expansion? Not to mention this expansion is suppose to be accelerating?
praṇām
source for Hubble's constant : http://www.astronomy.com/asy/default.aspx?c=a&id=4453 (http://www.astronomy.com/asy/default.aspx?c=a&id=4453)
~~~~~
namasté
We are informed by astrophysicists that the universe is expanding.
The measurement, as I am informed¹, is called the Hubble constant. It suggests an expansion rate of 48 miles per second per 3.26 million light-years or 77 kilometers per second per 3.26 million light-years. This has been updated from 71 km/s/Mpc, within 5% of error, a number from 2003 so I am told.
So, my question for our esteemed scientist's on HDF and those that wish to take a stab at this question. All around me I see space, I am made of molecules and scientist say they too are ~ 90% space. Why is it I do not see some change, so differences in my surroundings or environment if the universe is expanding? In fact I am told it is the ~space~ that is expanding specifically.
One answer as I can only presume is the amount of change is very small; 48 miles over 3.26 million light years is a very small amount.
I agree if we're only talking 1 second of time. Yet note the following as I calculate 'big'.
In one day there's 86,400 seconds. That suggest, in one day, the expansion that occurred = 4,147,200 miles
In one year then the expansion would be 4,147,200 X 365 days = 1,513,728,000 miles.
I am 58 years of age , so the universe has expanded 58 X 1,513,728,000 = 87,796,224,000 miles during my life time.Now wouldn't you think I'd notice this even slightly ? that my house is a bit to the left or right then it was a few years ago :) ? Or the street I live on is now a bit further when I drive home? Or more importantly I have grown a few more millimeters and I am taller, yet none of this occurs. What then of NASA shooting for a planet , and the planet moved?
What's up with this expansion? Not to mention this expansion is suppose to be accelerating?
praṇām
source for Hubble's constant : http://www.astronomy.com/asy/default.aspx?c=a&id=4453 (http://www.astronomy.com/asy/default.aspx?c=a&id=4453)