Microdipodops megacephalus

Dark elves in fiction

Dark galaxy

Dark fibre network

Bloch, 1795

Dark elves (Warhammer)

The dark deepwater snake-eel (Ophichthus aphotistos) is an eel in the family Ophichthidae. It was described by John E. McCosker and Chen Yu-Yun in 2000. It is a marine, deep water-dwelling eel which is known from Taiwan, in the northwestern Pacific Ocean. It dwells at a depth range of 36-1350 m (most commonly 250-350 m), and inhabits sand and mud. Specimens have been observed in burrows with only their heads exposed, or resting on sediment with their bodies curved in an S shape. Females can reach a maximum total length of 62.8 cm.The specific epithet aphotistos, meaning dark or obscure, refers both to the eel's appearance and its habitat.

A dark matter halo is a hypothetical component of a galaxy that envelops the galactic disc and extends well beyond the edge of the visible galaxy. The halo's mass dominates the total mass. Since they consist of dark matter, halos cannot be observed directly, but their existence is inferred through their effects on the motions of stars and gas in galaxies. Dark matter halos play a key role in current models of galaxy formation and evolution.

Dark energy star

Insecta

Dark of the moon

Bonus EP

Artibeus fuliginosus

Dark horse candidate

Dark On Fire

Dark magician

Dark jak

Dark green (X11)

Dark of the Moon

Dark knight strikes again

Dark gravity

Dark fermentation is the fermentative conversion of organic substrate to biohydrogen. It is a complex process manifested by diverse groups of bacteria, involving a series of biochemical reactions using three steps similar to anaerobic conversion. Dark fermentation differs from photofermentation in that it proceeds without the presence of light.Fermentative/hydrolytic microorganisms hydrolyze complex organic polymers to monomers which are further converted to a mixture of lower-molecular-weight organic acids and alcohols by obligatory producing acidogenic bacteria.Utilization of wastewater as a potential substrate for biohydrogen production has been drawing considerable interest in recent years especially in the dark fermentation process. Industrial wastewater as a fermentative substrate for H2 production addresses most of the criteria required for substrate selection viz., availability, cost and biodegradability (Angenent, et al., 2004; Kapdan and Kargi, 2006). Chemical wastewater (Venkata Mohan, et al., 2007a,b), cattle wastewater (Tang, et al., 2008), dairy process wastewater (Venkata Mohan, et al. 2007c, Rai et al. 2012), starch hydrolysate wastewater (Chen, et al., 2008) and designed synthetic wastewater (Venkata Mohan, et al., 2007a, 2008b) have been reported to produce biohydrogen apart from wastewater treatment from dark fermentation processes using selectively enriched mixed cultures under acidophilic conditions. Various wastewaters viz., paper mill wastewater (Idania, et al., 2005), starch effluent (Zhang, et al., 2003), food processing wastewater (Shin et al., 2004, van Ginkel, et al., 2005), domestic wastewater (Shin, et al., 2004, 2008e), rice winery wastewater (Yu et al., 2002), distillery and molasses based wastewater (Ren, et al., 2007, Venkata Mohan, et al., 2008a), wheat straw wastes (Fan, et al., 2006) and palm oil mill wastewater (Vijayaraghavan and Ahmed, 2006) have been studied as fermentable substrates for H2 production along with wastewater treatment. Using wastewater as a fermentable substrate facilitates both wastewater treatment apart from H2 production. The efficiency of the dark fermentative H2 production process was found to depend on pre-treatment of the mixed consortia used as a biocatalyst, operating pH, and organic loading rate apart from wastewater characteristics (Venkata Mohan, et al., 2007d, 2008c, d, Vijaya Bhaskar, et al., 2008d).In spite of its advantages, the main challenge observed with fermentative H2 production processes is the relatively low energy conversion efficiency from the organic source. Typical H2 yields range from 1 to 2 mol of H2/mol of glucose, which results in 80-90% of the initial COD remaining in the wastewater in the form of various volatile organic acids (VFAs) and solvents, such as acetic acid, propionic acid, butyric acid, and ethanol. Even under optimal conditions about 60-70% of the original organic matter remains in solution. Bioaugmentation with selectively enriched acidogenic consortia to enhance H2 production was also reported (Venkata Mohan, et al., 2007b). Generation and accumulation of soluble acid metabolites causes a sharp drop in the system pH and inhibits the H2 production process. Usage of unutilized carbon sources present in acidogenic process for additional biogas production sustains the practical applicability of the process. One way to utilize/recover the remaining organic matter in a usable form is to produce additional H2 by terminal integration of photo-fermentative processes of H2 production (Venkata Mohan, et al. 2008e, Rai et al. 2012) and methane by integrating acidogenic processes to terminal methanogenic processes.

IUCN3.1

The dark ghostshark, Hydrolagus novaezealandiae, is a shortnose chimaera of the family Chimaeridae, found on the continental shelf around the South Island of New Zealand.

Dark opal basil is a cultivar of Ocimum basilicum (sweet basil), developed by John Scarchuk and Joseph Lent at the University of Connecticut in the 1950s. With deep purple, sometimes mottled leaves, it is grown as much for its decorative appeal as for its culinary value.

Dark music

Dark of Night

Dark fruit-tree tortrix

Real Life

Dark mealworm beetle

Dark of the Matinee

Dark is the Moon

Dark on fire

Dark flight

Dark forces 2

Dark of the Moon (The Unit)

Dark lantern

Dark is the Night for All

Dark edged snow flat

Dark match (professional wrestling)

The dark kangaroo mouse (Microdipodops megacephalus) is a species of rodent in the family Heteromyidae. It is found in California, Idaho, Nevada, Oregon and Utah in the United States.

Dark long-tongued bat

Dark jewel sapphire

Gymnothorax

Dark hummingbird hawkmoth

Dark finned Conger-Eel

Dark is Rising (film)

Dark fluid theory

Dark engine

Dark of the Moon: Poems of Fantasy and the Macabre

Dark ghost shark

The dark (or hidden) figure of crime is a term employed by criminologists and sociologists to describe the amount of unreported or undiscovered crime.

Dark of Night is an American dramatic anthology series which aired on the now-defunct DuMont Television Network . It aired Fridays at 8:30pm EST from October 3, 1952 to May 1, 1953.The series starred mostly unknown actors. In it, the character known as "The Stranger" traveled to a different site each week in order to solve a crime. Each episode was filmed at a different location in the New York City area. According to Brooks and Marsh (1984), locations included a Coca-Cola bottling plant, Brentano's book store in Manhattan, a castle in New Jersey, and the American Red Cross Blood Bank.

Dark lady sonnets

Dark leaved willow

Loopa

Dark galaxies

Argynnis aglaja

In physical cosmology and astronomy, dark energy is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe.

Dark newtonia

Dark ghostshark

Dark deepwater snake-eel

Dark lady

LR/lc

Dark enlightenment

Dark leaf sitter

Dark frame

Dark grass blue

Dark gem staff

Female, Elsenborn, Belgium

Dark election

Dark matter is defined as hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter. It has been used in a variety of fictional media, including computer and video games and books. In such cases, dark matter is usually attributed extraordinary physical or magical properties. Such descriptions are often inconsistent with the known properties of dark matter proposed in physics and cosmology. For example in computer games, it is often used as material for making weapons and items, and is usually depicted as black or a similar color.Dark matter regularly appears as a topic in hybrid periodicals that cover both factual scientific topics and science fiction, and dark matter itself has been referred to as "the stuff of science fiction". A review of The Physics of Star Trek discusses dark matter before noting that "the best modern science fiction borrows heavily from cosmology".

Dark kangaroo mouse

Dark elf

S. ugoi

Timewaster

Dark gems

Dark footed ant spider

Print

Dark markets

Dark headed Aspen Leafroller moth

Dark light

Here Comes the Moon

Dark eyes

Dark kite-swallowtail

Dark lord chuckles the silly piggy

Dark of the Moon (film)

Dark mild

Dark desire

Dust-jacket illustration by Smith-Wollin Studios and Frank Utpatel for Dark of the Moon

Ophichthus

Microdipodops

Dark orange dart

Dark night of the scarecrow

Dark on light colour scheme

Dark messiah of might and magic: elements

Dark deepwater Snake Eel

Animalia

Dark motive

Dark opal

Dark one (Dungeons and Dragons)

Dark lord of the sith

Dark knight soundtrack

Dark is the sun

Dark ell

Dark number

Dark kahn

The dark fruit-eating bat (Artibeus obscurus), is a bat species from South America.

Dark mottle

Dark matter direct detection

March

Dark days in paradise

Argynnis

Turin Brakes

Dark headed aspen Leafroller moth

Dark fluid

United States

Dark guest ant

Dark order album

Dark night of the soul

Elves, a word from Germanic mythology, are frequently featured in Fantasy fiction. In modern fiction, particularly because of the influence from J. R. R. Tolkien's The Lord of the Rings, elves are modeled mostly after his original description: tall, human-like creatures of otherworldly beauty, with Kings and Queens.

Ocimum basilicum 'Dark Opal'

Dark leader

Dark furry epitola

Dark market

The dark deepwater snake-eel (Ophichthus aphotistos) is an eel in the family Ophichthidae. It was described by John E. McCosker and Chen Yu-Yun in 2000. It is a marine, deep water-dwelling eel which is known from Taiwan, in the northwestern Pacific Ocean. It dwells at a depth range of 36-1350 m (most commonly 250-350 m), and inhabits sand and mud. Specimens have been observed in burrows with only their heads exposed, or resting on sediment with their bodies curved in an S shape.

Dark deepwater Snake-eel

novaezealandiae

Artibeus jamaicensis fuliginosus

Dark net

Dark flying fox

A dark moon describes the Moon during that time that it is invisible against the backdrop of the Sun in the sky. The duration of a dark moon is between 1.5 and 3.5 days, depending on the orientation of the Earth and Sun.In astronomical usage, the new moon occurs in the middle of this period [source?], when the moon and sun are in conjunction. This definition has entered popular usage, so that calendars will typically indicate the date of the "new moon" rather than the "dark moon".

Dark money

Dark midnight blue

Artibeus obscurus

Dark forest swift

Dark electro

Dark internet

Dark magick

Dark dungeon

Source

Dark is the Moon is the third novel in The View from the Mirror quartet, by Ian Irvine.

Hydrolagus

TBD 2008

Dark humour

Dark headed aspen leafroller Moth

A bunch of Dark opal basil leaves

Dark finned conger-Eel

Dark industrial is the marriage of dark ambient music and industrial music. Much like dark ambient, the style is a minimalist soundscape. What separates dark ambient from dark industrial is the harshness. The droning and distorted samples of dark ambient are replaced by waves of static and eerie melodies.

The dark moray eel (Gymnothorax afer) is a moray eel found in the eastern Atlantic Ocean, from Mauritania to Cape Frio, Namibia. It was first named by Marcus Elieser Bloch in 1795,.

Dark matter is an unidentified type of matter distinct from dark energy, baryonic matter (ordinary matter), and neutrinos whose existence would explain a number of otherwise puzzling astronomical observations. The name refers to the fact that it does not emit or interact with electromagnetic radiation, such as light, and is thus invisible to the entire electromagnetic spectrum.

In physical cosmology and astronomy, dark energy is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe. Dark energy is the most accepted hypothesis to explain the observations since the 1990s indicating that the universe is expanding at an accelerating rate.Assuming that the standard model of cosmology is correct, the best current measurements indicate that dark energy contributes 68.3% of the total energy in the present-day observable universe. The mass–energy of dark matter and ordinary (baryonic) matter contribute 26.8% and 4.9%, respectively, and other components such as neutrinos and photons contribute a very small amount. The density of dark energy (~ 7 × 10−30 g/cm3) is very low, much less than the density of ordinary matter or dark matter within galaxies. However, it comes to dominate the mass–energy of the universe because it is uniform across space.Two proposed forms for dark energy are the cosmological constant, representing a constant energy density filling space homogeneously, and scalar fields such as quintessence or moduli, dynamic quantities whose energy density can vary in time and space. Contributions from scalar fields that are constant in space are usually also included in the cosmological constant. The cosmological constant can be formulated to be equivalent to the zero-point radiation of space i.e. the vacuum energy. Scalar fields that change in space can be difficult to distinguish from a cosmological constant because the change may be extremely slow.High-precision measurements of the expansion of the universe are required to understand how the expansion rate changes over time and space. In general relativity, the evolution of the expansion rate is estimated from the curvature of the universe and the cosmological equation of state (the relationship between temperature, pressure, and combined matter, energy, and vacuum energy density for any region of space). Measuring the equation of state for dark energy is one of the biggest efforts in observational cosmology today. Adding the cosmological constant to cosmology's standard FLRW metric leads to the Lambda-CDM model, which has been referred to as the "standard model of cosmology" because of its precise agreement with observations.

Dark galaxy (astronomy)

Dark flow is an astrophysical term describing a possible non-random component of the peculiar velocity of galaxy clusters. The actual measured velocity is the sum of the velocity predicted by Hubble's Law plus a possible small and unexplained (or dark) velocity flowing in a common direction.According to standard cosmological models, the motion of galaxy clusters with respect to the cosmic microwave background should be randomly distributed in all directions.

Dark meat (poultry)

Dark figure of crime

Dark object

Dark island castle

Dark green

Dark moray

The Guardian

A. aglaja

English

Dark lord of the sith Darth Revan

Dark fall: The journal

The dark newtonia (Newtonia amphichroa) is a species of bird in the family Vangidae. It is endemic to Madagascar.Its natural habitat is subtropical or tropical moist lowland forests.

Dark deepwater snake Eel

Dark On Fire is the fourth studio album by the British band Turin Brakes. The band spent 2006 writing and recording demo songs. These songs were tested live on a UK tour in November 2006. After this, Olly Knights and Gale Paridjanian teamed up with their live band and producer Ethan Johns to put the album together. The album was recorded in two different studios in London in early 2007. The band took a break from recording sessions late January because Gale's wife was expecting a baby, but in March 2007 the band finished the recording sessions.The album was released on 17 September 2007 and entered the UK chart at #36. Special edition copies come with the 5-track bonus EP "Something Out Of Nothing."The album was released to mostly generally favorable reviews although some reviewers found the new highly produced full-band sound to be disappointing. Others hailed the album as a return to the quality of 2001's The Optimist LP. Though the album sounds more glossy than previous efforts, it is in fact a mostly live recorded effort. This is significantly different from the previous albums. The band credit Ethan Johns with the idea for this approach. Playing the songs live to an audience helped shaping the songs as well.

Dark flocculi

Dark passenger

Stalker

Dark finned conger Eel

Something in My Eye

Dark of the Moon (The Unit episode)

Dark freckled catshark

Dark moray eel

Dark horse (disambiguation)

Dark globular cluster is a proposed type of globular star clusters that has an unusually high mass for the amount of stars within it. Proposed in 2015 on the basis of observational data, dark globular clusters are believed to be populated by objects with significant dark matter components, such as central massive black holes.

Dark is the moon

Dark lanthorn

Dark magic

Last Chance

Dark energy

The dark long-tongued bat (Lichonycteris obscura) is a bat species from South and Central America. It is monotypic within the genus Lichonycteris.

Großer Perlmutterfalter, Elsenborn, Ostbelgien .jpg

Dark knights

Dark electro house

Dark headed Aspen leafroller Moth

Dark fishing spider

Dark palm dart

In the politics of the United States, dark money is a term that describes funds given to nonprofit organizations—primarily 501(c)(4) (social welfare) and 501(c)(6) (trade association) groups—that can receive unlimited donations from corporations, individuals, and unions, and spend funds to influence elections, but are not required to disclose their donors.According to the Center for Responsive Politics, "spending by organizations that do not disclose their donors has increased from less than $5.2 million in 2006 to well over $300 million in the 2012 presidential cycle and more than $174 million in the 2014 midterms." The New York Times editorial board has opined that the 2014 midterm elections were influenced by "the greatest wave of secret, special-interest money ever raised in a congressional election."

Dark fiber

O. aphotistos

Dark mullein

Dark deepwater snake-Eel

Dark deepwater Snake eel

Dark matter star

Dark moon

Dark deepwater Snake-Eel

Dark headed Aspen Leafroller Moth

Dark lord of derkholm

A dark fibre (or dark fiber) or unlit fibre is an unused optical fibre, available for use in fibre-optic communication.The term dark fibre was originally used when referring to the potential network capacity of telecommunication infrastructure, but now also refers to the increasingly common practice of leasing fibre optic cables from a network service provider, or, generally, to the fibre installations not owned or controlled by traditional carriers. In common vernacular, dark fibre may sometimes still be called "dark" if it has been lit by a fibre lessee and not the cable's owner.A dark fibre network or simply dark network is a privately operated optical fiber network that is run directly by its operator over dark fibre leased or purchased from another supplier. This is in contrast to purchasing bandwidth or leased line capacity on an existing network. Dark fibre networks may be used for private networking, or as Internet access or infrastructure.

Capsule
The Sunday Times

Dark goosefoot

Hydrolagus novaezealandiae

Dark matches

M. megacephalus

Dark light (vision)

Dark light (disambiguation)

Dark green vegetable

The dark green fritillary (Argynnis aglaja) is a butterfly of the family Nymphalidae. The insect has a wide range in the Palearctic ecozone - Europe, Morocco, Iran, Siberia, Central Asia, China, Korea and Japan.

G. afer

McCosker & Chen, 2000

Dark fruit-eating bat

Other Side

Ophichthus aphotistos

Dark of Night is an American dramatic anthology series which aired on the now-defunct DuMont Television Network . It aired Fridays at 8:30pm EST from October 3, 1952 to May 1, 1953.The series starred mostly unknown actors. In it, the character known as "The Stranger" traveled to a different site each week in order to solve a crime. Each episode was filmed at a different location in the New York City area.

IUCN2.3

Dark green environmentalism

xvi, 418

Bye Pod

Dark justice

Dark l

Dark deepwater snake eel

Dark halo

Dark media are a type of media outlined by American philosopher Eugene Thacker.

Scyliorhinus ugoi

Dark globular cluster

NME

Dark orange (colour)

Dark matter galaxy

Ocimum basilicum var. purpureum

Thomas, 1895

Dark messiah

A dark galaxy is a hypothesized galaxy with no, or very few, stars. They received their name because they have no visible stars, but may be detectable if they contain significant amounts of gas. Astronomers have long theorized the existence of dark galaxies, but there are no confirmed examples to date. Dark galaxies are distinct from intergalactic gas clouds caused by galactic tidal interactions, since these gas clouds do not contain dark matter, so they do not technically qualify as galaxies. Distinguishing between intergalactic gas clouds and galaxies is difficult; most candidate dark galaxies turn out to be tidal gas clouds. The best candidate dark galaxies to date include HI1225+01, AGC229385, and numerous gas clouds detected in studies of quasars.On 25 August 2016, astronomers reported that Dragonfly 44, an ultra diffuse galaxy (UDG) with the mass of the Milky Way galaxy, but with nearly no discernable stars or galactic structure, may be made almost entirely of dark matter.

Dark heresy

Dark match

Dark gate

Dark On Fire is the fourth studio album by the British band Turin Brakes. The band spent 2006 writing and recording demo songs. These songs were tested live on a UK tour in November 2006. After this, Olly Knights and Gale Paridjanian teamed up with their live band and producer Ethan Johns to put the album together. The album was recorded in two different studios in London in early 2007.

Dark fence

Dark matter (fiction)

Dark hunter

Dark Faced Burnished Ware or DFBW is the earliest form of pottery developed in the western world.It was produced after the earliest examples from the independent phenomenon of the Jōmon culture in Japan and is predominantly found at archaeological sites in Lebanon, Israel southwest Syria and Cyprus. Some notable examples of Dark Faced Burnished Ware were found at Tell Judaidah (and nearby Tell Dhahab) in Amuq by Robert Braidwood as well as at Ras Shamra and Tell Boueid. Other finds have been made at Yumuktepe in Mersin, Turkey where comparative studies were made defining different categories of ware that have been generally grouped as DFBW. It is thought to have come as a development of White Ware and takes its name from the often dark coloured choice of clays from which it is made. Vessels are often coarse, tempered with grit or sand, burnished to a shiny finish and made with a variety of clays in different areas. The grit or sand is thought to have made the vessels easier to fire and the burnishing made them less permeable and suitable for heated liquid substances. Later examples are usually finer and more carefully burnished and decorated. Designs included rounded, inverted or straight sided bowls with plain rims, some with basic handles under the rims along with ring bases in the later pieces. Decorations included incised or impressed chevrons or motifs with pattern burnishing appearing in later periods. Other types of pottery were produced around the same time including coarse impressed ware, dark faced unburnished ware and washed impressed ware but these were less prevalent.DFBW has long been considered the forebear of the more polished examples such as Ancient Greek pottery.

Dark forces

First edition cover

Dark eye

Invisible Boy

Dark creeper

Dark glasses

Dark Fruit-eating Bat range

Dark hottentot

Gymnothorax afer

Dark fibre

Scyliorhinus ugoi, also known as the Dark freckled catshark is a catshark of the family Scyliorhinidae. It is found in Northeastern and Southeastern Brazil. This species differs from Scyliorhinus besnardi, Scyliorhinus haeckelii group and Scyliorhinus hesperius, in background coloration, head width, sexual maturity, and in cranial and body proportions.

Dark line blue

Ghost

Dark on light color scheme

Dark media

yes

Dark earth in archaeology is an archaeological horizon, as much as 1 m (2 – 3 ft) thick, indicating settlement over long periods of time. The material is high in organic matter, including charcoal, which gives it its characteristic dark colour; it may also contain fragments of pottery, tile, animal bone and other artefacts. It is interpreted as soil enriched with the sooty remains of thatched roofs from houses without chimneys, with other waste materials. In some areas it appears to give the soil added fertility.London's dark earth was originally called 'black earth' by archaeologists. It was renamed dark earth because of confusion with the chernozem (black earth soils in Russia; in these, the dark colour is traditionally (not universally) thought to come from humus, rather than soot).

Dark green fritillary

Dark night

Dark night sky paradox

Mammalia

N. amphichroa

Bottled At Source - The Best Of The Source Years

Dark finned Conger Eel

Dark frame subtraction

Dark knight 2

Dark mealworm

A dark fibre (or dark fiber) or unlit fibre is an unused optical fibre, available for use in fibre-optic communication.The term dark fibre was originally used when referring to the potential network capacity of telecommunication infrastructure, but now also refers to the increasingly common practice of leasing fibre optic cables from a network service provider, or, generally, to the fibre installations not owned or controlled by traditional carriers.

Dark network

Dark grass-brown

Dark fermentation

Dark industrial

Dark lagers

H. novaezealandiae

Dark lords of the sith

Dark knight (disambiguation)

Dark of the Moon is a dramatic stage play by Howard Richardson and William Berney. The play was produced on Broadway in 1945.This was followed by a national tour and eventually numerous college and high-school productions. It is also revived professionally, e.g. by Pittsburgh's Quantum Theatre in 2005. The original London production 1948 – 1949, at Ambassadors Theatre, was an early much admired production by the distinguished director Peter Brook..Set in the Appalachian Mountains and written in an Appalachian dialect, the play centers on the character of John, a witch boy who seeks to become human after falling in love with a human girl, Barbara Allen. Originally written by Howard Richardson in 1939 as a dramatization of the centuries-old European folk song "The Ballad of Barbara Allen", it was first performed at the University of Iowa in 1942 under the title Barbara Allen.After a rewrite by Richardson's cousin, William Berney, it was presented at the Brattle Playhouse in Cambridge, Massachusetts. The Shuberts saw it and transferred it (mainly re-cast) to Broadway at the Richard Rodgers Theatre (named at the time the 46th Street Theatre), where it ran from March 14, 1945 to December 15, 1945, directed by Robert E. Perry. Although Dark of the Moon is not a musical, it was originally billed as a "legend with music" and characters do sing in most productions. Paul Newman and Richard Hart once played the role of John.

Dark lager

Dark matter

Dark dawn

Dark finned Conger eel

Dark of the Moon (play)

Lichonycteris obscura

Dark dungeons

Dark flight (astronomy)

Dark folk

Dark eyed Junco

Dark olive drab

Dark fiber network

L. obscura

Dark matter problem

Dark orange playboy

Dark el

Dark elf (disambiguation)

Dark headed aspen leafroller moth

edited by August Derleth

Dark on Fire

Dark matter galaxies

Dark electronic

Dark khaki

Dark is The Way, Light is a Place

Dark meteorite

Newtonia

Male, Val d'Aosta, Italy

Dark dot disease

Dark lightning

Dark heart of dunwich

Dark jezebel

Rodentia

Dark elves

Dark headed aspen Leafroller Moth

Dark matter is an unidentified type of matter distinct from dark energy, baryonic matter (ordinary matter), and neutrinos whose existence would explain a number of otherwise puzzling astronomical observations. The name refers to the fact that it does not emit or interact with electromagnetic radiation, such as light, and is thus invisible to the entire electromagnetic spectrum. Although dark matter has not been directly observed, its existence and properties are inferred from its gravitational effects such as the motions of visible matter, gravitational lensing, its influence on the universe's large-scale structure, on galaxies, and its effects in the cosmic microwave background.The standard model of cosmology indicates that the total mass–energy of the universe contains 4.9% ordinary matter, 26.8% dark matter and 68.3% dark energy. Thus, dark matter constitutes 84.5% of total mass, while dark energy plus dark matter constitute 95.1% of total mass–energy content. The great majority of ordinary matter in the universe is also unseen, since visible stars and gas inside galaxies and clusters account for less than 10% of the ordinary matter contribution to the mass-energy density of the universe. The most widely accepted hypothesis on the form for dark matter is that it is composed of weakly interacting massive particles (WIMPs) that interact only through gravity and the weak force.The dark matter hypothesis plays a central role in current modeling of cosmic structure formation and galaxy formation and evolution and on explanations of the anisotropies observed in the cosmic microwave background (CMB). All these lines of evidence suggest that galaxies, galaxy clusters, and the universe as a whole contain far more matter than that which is observable via electromagnetic signals. Many experiments to detect proposed dark matter particles through non-gravitational means are under way; however, no dark matter particle has been conclusively identified.Although the existence of dark matter is generally accepted by most of the astronomical community, a minority of astronomers, motivated by the lack of conclusive identification of dark matter, argue for various modifications of the standard laws of general relativity, such as MOND, TeVeS, and conformal gravity that attempt to account for the observations without invoking additional matter.

Dark knight film

Dark of the Moon is a dramatic stage play by Howard Richardson and William Berney. The play was produced on Broadway in 1945.This was followed by a national tour and eventually numerous college and high-school productions. It is also revived professionally, e.g. by Pittsburgh's Quantum Theatre in 2005.

Dark finned conger-eel

Dark kingdom arc

Dark giant horsefly

Dark nebulas

Brave New World

Wied-Neuwied, 1826

Merriam, 1891

Dark elfin

Dark green mouse-ear chickweed

Dark matter halo

Lichonycteris

Dark millet

Dark opal basil is a cultivar of Ocimum basilicum (sweet basil), developed by John Scarchuk and Joseph Lent at the University of Connecticut in the 1950s. With deep purple, sometimes mottled leaves, it is grown as much for its decorative appeal as for its culinary value. Dark opal basil was a 1962 winner of the All-American Selection award.Like other purple basils, the purple color is from anthocyanins, especially cyanidin-3-(di-p-coumarylglucoside)-5-glucoside but also other cyanidin based and peonidin based compounds. 'Dark opal', along with other large leaved purple cultivars such as 'Purple Ruffles', has a high concentration of anthocyanins and is considered a potential source of red pigments for the food industry. The anthocyanin concentration is about 18 mg per 100 g fresh leaves, similar to Perilla frutescens, and greater than smaller leaved purple basils such as 'Purple bush' (at about 6 mg per 100 g).

Dark eyed junco

Scyliorhinus

Arthropoda

Dark night rises

Dark film

A dark moon describes the Moon during that time that it is invisible against the backdrop of the Sun in the sky. The duration of a dark moon is between 1.5 and 3.5 days, depending on the orientation of the Earth and Sun.In astronomical usage, the new moon occurs in the middle of this period [source?], when the moon and sun are in conjunction. This definition has entered popular usage, so that calendars will typically indicate the date of the "new moon" rather than the "dark moon". However, originally "new moon" referred to the crescent on the first night it is visible, one or two days after conjunction. Maritime records from the nineteenth century distinguish the dark moon (no moon) from the new moon.

Dark knight returns

Reichenow, 1891

For the Fire

Dark matter behavior

Dark knight (ride)

Dark dune spot

Dark is the Way, Light is a Place

Dark of the Matinée

Dark eyes (disambiguation)

'Dark Opal'

Dark electromagnetism

Artibeus

Dark magic (disambiguation)

Dark dune spots

Dark forces (series)

Dark matter in fiction

Dark joke

Dark heart of Dunwich

Dark Faced Burnished Ware or DFBW is the earliest form of pottery developed in the western world.It was produced after the earliest examples from the independent phenomenon of the Jōmon culture in Japan and is predominantly found at archaeological sites in Lebanon, Israel southwest Syria and Cyprus. Some notable examples of Dark Faced Burnished Ware were found at Tell Judaidah (and nearby Tell Dhahab) in Amuq by Robert Braidwood as well as at Ras Shamra and Tell Boueid.

Dark knight

Dark stalker

Dark elves (disambiguation)

Dark on light

Dark latin groove

Dark messiah of might and magic

Dark earth

Dark nebulae

Dark humor

Dark matter theory

Dark orange

Dark goldenrod

Dark day in the deep sea

Dark finned Conger-eel

A. obscurus

Dark one (Dungeons & Dragons)

Dark hunger

Dark earth in archaeology is an archaeological horizon, as much as 1 m (2 – 3 ft) thick, indicating settlement over long periods of time. The material is high in organic matter, including charcoal, which gives it its characteristic dark colour; it may also contain fragments of pottery, tile, animal bone and other artefacts. It is interpreted as soil enriched with the sooty remains of thatched roofs from houses without chimneys, with other waste materials.

Dark finned conger eel

Dark matter (disambiguation)

Dark is Rising: The Seeker

Smith-Wollin Studios and Frank Utpatel

Dark faced burnished ware

Dark optical trap

Newtonia amphichroa

Dark fermentation is the fermentative conversion of organic substrate to biohydrogen. It is a complex process manifested by diverse groups of bacteria, involving a series of biochemical reactions using three steps similar to anaerobic conversion.

Dark flow is an astrophysical term describing a possible non-random component of the peculiar velocity of galaxy clusters. The actual measured velocity is the sum of the velocity predicted by Hubble's Law plus a possible small and unexplained (or dark) velocity flowing in a common direction.According to standard cosmological models, the motion of galaxy clusters with respect to the cosmic microwave background should be randomly distributed in all directions. However, analyzing the three-year Wilkinson Microwave Anisotropy Probe (WMAP) data using the kinematic Sunyaev-Zel'dovich effect, astronomers Alexander Kashlinsky, F. Atrio-Barandela, D. Kocevski and H. Ebeling found evidence of a "surprisingly coherent" 600–1000 km/s flow of clusters toward a 20-degree patch of sky between the constellations of Centaurus and Vela.The researchers had suggested that the motion may be a remnant of the influence of no-longer-visible regions of the universe prior to inflation. Telescopes cannot see events earlier than about 380,000 years after the Big Bang, when the universe became transparent (the cosmic microwave background); this corresponds to the particle horizon at a distance of about 46 billion (4.6×1010) light years. Since the matter causing the net motion in this proposal is outside this range, it would in a certain sense be outside our visible universe; however, it would still be in our past light cone.The results appeared in the October 20, 2008, issue of Astrophysical Journal Letters.In 2013, data from the Planck space telescope showed no evidence of "dark flow" on that sort of scale, discounting the claims of evidence for either gravitational effects reaching beyond the visible universe or existence of a multiverse. However, in 2015 Kashlinsky et al claim to have found support for its existence using both Planck and WMAP data.

K. D. A. Soares, Gadig & U. L. Gomes, 2015

A dark galaxy is a hypothesized galaxy with no, or very few, stars. They received their name because they have no visible stars, but may be detectable if they contain significant amounts of gas. Astronomers have long theorized the existence of dark galaxies, but there are no confirmed examples to date. Dark galaxies are distinct from intergalactic gas clouds caused by galactic tidal interactions, since these gas clouds do not contain dark matter, so they do not technically qualify as galaxies.

Dark matter is defined as hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter. It has been used in a variety of fictional media, including computer and video games and books. In such cases, dark matter is usually attributed extraordinary physical or magical properties. Such descriptions are often inconsistent with the known properties of dark matter proposed in physics and cosmology.

Dark grass-skipper

Dark meat

Dark lord

Dark of the Moon (disambiguation)

Dark night (roller coaster)

Dark figure

Elves, a word from Germanic mythology, are frequently featured in Fantasy fiction. In modern fiction, particularly because of the influence from J. R. R. Tolkien's The Lord of the Rings, elves are modeled mostly after his original description: tall, human-like creatures of otherworldly beauty, with Kings and Queens. Along with this development, Dark elves are often modeled as a more sinister counterpart to the High elves, like the Drow or the Trow, which are the fairy-like dark creatures of Orcadian and Shetlandic folklore. The dark elves (Dökkálfar) or black elves (Svartálfar) are presented in Germanic mythology as dwarves and gray ones.

Eveready

Dark hawksbeard

Dark garage

Dark data (business)

Dark opal basil

New Star

Dark knob-tipped shadowdamsel

Dark lord (beer)

Dark glassy tiger

Dark force

Artibeus obscurus map.png

Dark figure for crime

Turin Brakes: Live Session

Dark headed Aspen leafroller moth

Dark flow