posted on Jul, 2 2006 @ 07:22 PM
Originally posted by LEO006
Hello, my name is Leo. I was just wondering what is dark matter? Is it the oppisite of normal matter? Is dark matter just really anitmatter? I know
CERN has has developed anitimatter. What is the difference of antimatter and normal matter?
Hey Leo, welcome aboard.
Dark matter is supposedly undetectable matter who's inferred presence is used to explain the vastly greater bulk of the universe that is measurable
but not viewable. For instance, the mass of the observable matter in a typical galaxy (stars, gas, dust, etc) does not produce enough of a
gravitational pull to hold the galaxy together. The galaxy should by all means tear itself apart, but it does not. "Dark Matter" is used by
scientists as a patch for this little problem, beefing up the mass of the galaxy to bring it in line with what is required. There are several ideas
proposed to describe what dark matter might be. Read a bit about it
Antimatter is the opposite of regular matter, where each base particle of regular matter is represented by one of opposite charge. Electrons and
Positrons, Protons and Anti Protons. It is almost incomprehensibly difficult to produce and store as it will react with regular matter upon contact,
completely converting itself and an equal amount of regular matter into high-energy radiation. You can read a bit more about it
Hope this helps.
I would appreciate it if you define the following please:
2. Dark matter
3. Matter ( differ from the couple above)
A hypothetical form of matter that is identical to physical matter except that its atoms are composed of antielectrons, antiprotons, and
2) dark matter
Physical objects or particles that emit little or no detectable radiation of their own and are postulated to exist because of unexplained
gravitational forces observed on other astronomical objects. Dark matter is believed to be part of the missing mass.
a) Something that occupies space and can be perceived by one or more senses; a physical body, a physical substance, or the universe as a whole.
b) Physics. Something that has mass and exists as a solid, liquid, gas, or plasma.
[edit on 2/7/2006 by Thousand]