Thoughts on Dark Matter, Energy?
@thoughtprocess (2209)
United States
6 responses
@tarachand (3895)
• India
7 Jan 07
Dark matter - conjecture on dark matter is based on calculations using our current knowledge of physics. Is it there or not? If yes, then maybe some or all of our knowledge and assumptions are correct, if no then maybe Einstien was wrong?
As far as energy is concerned, things do run down and entropy increases. There could come a time when all the energy in the known universe could run down and the temperature would be absolute zero, no more stars would be formed, all matter, physics, chemistry, laws of nature as we know them would be diferent.
@kishore1987 (348)
• India
28 Aug 06
i think dark matter is in space far away from earth7our slar system.
and now about energy its the energy possessed by this dark matter... dark matter is named as black holes
@krishna183 (2284)
• India
5 Sep 06
I dont know what exactly dark matter is .. all i know is that it accounts for the excess gravitational pull that is observed in our galaxies
@mvsrao (4365)
• India
23 Nov 06
In astrophysics, dark matter is matter
that does not emit or reflect enough
electromagnetic radiation (such as
light, X-rays and so on) to be detected
directly, but whose presence may be
inferred from its gravitational effects
on visible matter.
Among the observed phenomena consistent
with the existence of dark matter are
the rotational speeds of galaxies and
orbital velocities of galaxies in
clusters, gravitational lensing of
background objects by galaxy clusters
such as the Bullet cluster, and the
temperature distribution of hot gas in
galaxies and clusters of galaxies.
Dark matter also plays a central role in
structure formation and Big Bang
nucleosynthesis, and has measurable
effects on the anisotropy of the cosmic
microwave background.
All these lines of evidence suggest that
galaxies, clusters of galaxies, and the
universe as a whole contain far more
matter than is directly observable,
indicating that the remainder is dark.
http://en.wikipedia.org/wiki/Dark_matter