01 Nov '13 03:37>
http://www.bbc.co.uk/news/science-environment-24637890
Originally posted by woodypusherWhew! This article takes a couple of read throughs for me.
http://en.wikipedia.org/wiki/Metric_expansion_of_space#Understanding_the_expansion_of_Universe
Originally posted by sonshipThose are good questions. The 'pumping in of space' I envision would be like two conveyor belts next to each other pointing in opposite directions and going in opposite directions so if one candy bar is on one belt and another identical candy bar is on the other and the conveyor belts start moving, the candy bars separate but don't themselves have any energy expended on them. However, the conveyor belt takes energy so I imagine there is energy being pumped into our universe that gives and effect like the conveyor belt but of course much more subtle and probably forever hidden from science.
Whew! This article takes a couple of read throughs for me.
I have heard of additional space arriving in the universe as well as objects receding by movement.
I was surprised again to hear that the local group of galaxies is not subject to this expansion but Andromeda is actually falling toward the Milky Way. And the whole shabang of the local group ...[text shortened]... quires energy to produce more space?
Do you know if black holes swallow up space itself ?
Originally posted by sonshipIf you mean do you need a continuous supply of energy then no, but there are two ways metric expansion can be caused. One is what happens in the original Big Bang/Hubble theory where there is no cosmological constant. In this case the expansion is just coasting and decelerates due to gravity - once you've set it going it doesn't require additional energy inputs to keep going.
Do you know if it requires energy to produce more space?
Originally posted by sonshipI am sure you are aware that people knew about the expansion of space several thousand years before modern scientist discovered it. I would not put too much faith in the existence of black holes, since that is just a belief system at this point.
Whew! This article takes a couple of read throughs for me.
I have heard of additional space arriving in the universe as well as objects receding by movement.
I was surprised again to hear that the local group of galaxies is not subject to this expansion but Andromeda is actually falling toward the Milky Way. And the whole shabang of the local group ...[text shortened]... quires energy to produce more space?
Do you know if black holes swallow up space itself ?
Originally posted by RJHindsSo what do YOU call that region of space near the center of the milky way that has stars swirling around it and giving off incredible amounts of energy?
I am sure you are aware that people knew about the expansion of space several thousand years before modern scientist discovered it. I would not put too much faith in the existence of black holes, since that is just a belief system at this point.
The Instructor
Originally posted by sonhouseI call it the center of the galaxy.
So what do YOU call that region of space near the center of the milky way that has stars swirling around it and giving off incredible amounts of energy?
It's amazing. Every time you speak you put your foot even more firmly in your mouth.
Originally posted by RJHindsCome on, you took physics, surely you can calculate how much mass it would take to make an entire star system act like a planet around a sun.
Who knows?
The Instructor
Originally posted by sonhouse
Come on, you took physics, surely you can calculate how much mass it would take to make an entire star system act like a planet around a sun.
Take a look at this article. Look at the image which is quite a number of light years wide and you can see for yourself the swirling going on and that takes mass, a LOT of mass, millions of suns worth of mass:
http://www.nbcnews.com/science/radio-x-rays-point-jet-our-galaxys-big-black-hole-2D11644678
Come on, you took physics,
Originally posted by sonhouseYouTube
Come on, you took physics, surely you can calculate how much mass it would take to make an entire star system act like a planet around a sun.
Take a look at this article. Look at the image which is quite a number of light years wide and you can see for yourself the swirling going on and that takes mass, a LOT of mass, millions of suns worth of mass:
http://www.nbcnews.com/science/radio-x-rays-point-jet-our-galaxys-big-black-hole-2D11644678
Originally posted by RJHindsBack with the same lame response. Well I care and a lot of other people do too. We want to know WHY there is a black hole in the center of the Milky way and what is on the other side of the black hole.
http://www.youtube.com/watch?v=mF9Yn5mgrjY
The Instructor