Such observations have in general indicated the consistency of the standard cosmological model  and the fact that our universe hardly contains ~ 5% luminous matter, whereas the remainder consists of nonluminous
dark matter (~ 23%) and dark energy (~ 72%) .
Caption: Galaxies like Messier 81, a spiral galaxy in the constellation Ursa Major, are surrounded by large quantities of cold, nonluminous
gas, a new study finds.
In this study a new expression for soot absorption coefficient has been presented depending on temperature which could be coupled with nonluminous
flame data containing several gray gases and one clear gas.
gas fires (especially hydrogen), fire detection may be difficult.
and not directly detectable, dark matter is thought to account for 85 percent of the universe's mass.
These results will help researchers investigate the nature and mass of dark-matter halos, the total amount of luminous and nonluminous
material in the universe, and long-term cosmic evolution.
Since DM's existence is inferred solely from its gravitational effects, and its nature is otherwise unknown, one cannot rule-out the possibility that DM's behavior may be contradictory to the consequences of quantum mechanics as it applies to luminous matter (LM), which is particularly troubling since it necessarily brings into question the applicability of Planck's constant as a viable "action" in this nonluminous
While there have been a few surprises, such as the large amount of dark matter (a nonluminous
gravitating substance whose composition does not comprise elements from the periodic table) and dark energy (an unknown form of energy--perhaps a cosmological constant--that is causing the universe to speed up in its expansion instead of to slow down, as was originally expected), the inflationary picture has so far passed these three tests at a basic level.
The diagram is used to plot and compare the colors of both luminous and nonluminous
parahaemolyticus strain KNH1 (Nyholm et al., 2000) or the nonluminous
A splash of black in the center of the canvas creates a vortex of dark matter, that ubiquitous nonluminous
component of the universe whose identity remains a mystery.