Quote:
Originally Posted by GoinAllTheWay
/\/\/\
Yes, dark matter I believe is pushing everything apart. Now if I understood the show correctly, dark energy is also comes into play. They are just trying to figure out which one has the bigger affect as it will help predict how the universe will die.
|
Actually dark matter is like normal matter with respect to gravity, it attracts just like normal matter does. It just doesn't interact with normal matter (i.e. it's hard to detect).
Dark energy is bigger, 74% of the mass/energy in the universe is dark energy, 22% is dark matter, the rest is the stuff we see and interact with.
Quote:
Originally Posted by Ziggy Lidstrom
Isn't dark matter extremely dense, thus the speculation that it (the universe pre BB) reached a density 'tipping-point'?
|
Not sure what you mean by that, but really anything "pre big bang" is pretty much pure speculation.