References in periodicals archive ?
The smaller an object the further its ratio of ordinary matter to dark matter is from the cosmic mix.
purported that we matter to others if others are interested in us and concerned about us.
As he and other atomic physicists consider other types of exotic matter to mimic using Fermi gases, no prospect generates as much excitement as superconductors.
The change in sound marks the time when the universe is cool enough for photons and atomic matter to separate.
Nicastro adds that mapping ordinary matter will reveal the location of dark matter This invisible material is believed to be the stuff that coalesced first in the universe, which triggered ordinary matter to clump into galaxies.
We hypothesize the existence of dark matter to explain observations that could be attributed to gravitational forces, but we don't know what dark matter might be.
Whenever gravity caused matter to compress, the pressure exerted by the trapped photons offered resistance.
It's common during phase transitions, like water's familiar ones, for bubbles of unchanged matter to linger and then suddenly and violently burst in a belated transformation into the new phase.
He cautions that as astronomers probe farther and farther out from a galaxy's visible core, it may become difficult to ascribe dark matter to a particular galaxy.
A variety of observations, however, including measurements taken over the past year, has revealed that the universe comes up short: It doesn't have nearly enough matter to be flat.
A low-weight universe does not have sufficient density of matter to be flat.
Today's galactic architecture, says Szalay, is consistent with a low-density universe-one that expands forever-containing a relatively high proportion of ordinary matter to dark matter.