Search results
Results from the WOW.Com Content Network
The word vacuum comes from Latin 'an empty space, void', noun use of neuter of vacuus, meaning "empty", related to vacare, meaning "to be empty".. Vacuum is one of the few words in the English language that contains two consecutive instances of the vowel u.
Instead of the general notion that a void is a region of space with a low cosmic mean density; a hole in the distribution of galaxies, it defines voids to be regions in which matter is escaping; which corresponds to the dark energy equation of state, w.
Local concentrations of matter have condensed into stars and galaxies. Intergalactic space takes up most of the volume of the universe, but even galaxies and star systems consist almost entirely of empty space. Most of the remaining mass-energy in the observable universe is made up of an unknown form, dubbed dark matter and dark energy. [5] [6 ...
The density of dark matter in an expanding universe decreases more quickly than dark energy, and eventually the dark energy dominates. Specifically, when the volume of the universe doubles, the density of dark matter is halved, but the density of dark energy is nearly unchanged (it is exactly constant in the case of a cosmological constant).
The words tohu and bohu also occur in parallel in Isaiah 34:11, which the King James Version translates with the words "confusion" and "emptiness". The two Hebrew words are properly segolates, spelled tohuw and bohuw. [3] Hebrew tohuw translates to "wasteness, that which is laid waste, desert; emptiness, vanity; nothing". [4]
The presence of dark matter (DM) in the halo is inferred from its gravitational effect on a spiral galaxy's rotation curve.Without large amounts of mass throughout the (roughly spherical) halo, the rotational velocity of the galaxy would decrease at large distances from the galactic center, just as the orbital speeds of the outer planets decrease with distance from the Sun.
In astrophysics, the virial mass is the mass of a gravitationally bound astrophysical system, assuming the virial theorem applies. In the context of galaxy formation and dark matter halos, the virial mass is defined as the mass enclosed within the virial radius of a gravitationally bound system, a radius within which the system obeys the virial theorem.
Mahāśūnya (महाशून्य) refers to the “great void”, according to Arṇasiṃha’s Mahānayaprakāśa verse 134.—Accordingly, “The Śāmbhava (state) is the one in which the power of consciousness (citi) suddenly (sahasā) dissolves away into the Great Void [i.e., mahāśūnya] called the Inactive (niḥspanda) that is ...